diff --git a/src/GitHubActionsDemo.Api/Controllers/AuthorsController.cs b/src/GitHubActionsDemo.Api/Controllers/AuthorsController.cs
index 0f4bd1e..2fcde26 100644
--- a/src/GitHubActionsDemo.Api/Controllers/AuthorsController.cs
+++ b/src/GitHubActionsDemo.Api/Controllers/AuthorsController.cs
@@ -7,24 +7,46 @@ namespace GitHubActionsDemo.Api.Controllers;
 
 [ApiController]
 [Route("[controller]")]
-public class AuthorsController : ControllerBase
+public class AuthorsController : BaseController
 {
-    private readonly ILogger<AuthorsController> _logger;
     private readonly ILibraryService _libraryService;
 
     public AuthorsController(
-        ILogger<AuthorsController> logger,
         ILibraryService libraryService
     )
     {
-        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         _libraryService = libraryService ?? throw new ArgumentNullException(nameof(libraryService));
     }
 
     [HttpPost]
-    public async Task<AuthorResponse> AddAuthorAsync(AuthorRequest authorRequest)
+    public async Task<IActionResult> AddAuthorAsync([FromBody] AuthorRequest authorRequest)
     {
-        var author = await _libraryService.AddAuthorAsync(authorRequest.Map());
-        return author.Map();
+        var result = await _libraryService.AddAuthorAsync(authorRequest.Map());
+        return result.Match(
+            success => Ok(success.Value.Map()),
+            error => InternalError()
+        );
+    }
+
+    [HttpGet("{authorId}")]
+    public async Task<IActionResult> GetAuthorAsync(int authorId)
+    {
+        var result = await _libraryService.GetAuthorAsync(authorId);
+        return result.Match(
+            success => Ok(success.Value.Map()),
+            notfound => NotFound(),
+            error => InternalError()
+        );
+    }
+
+    [HttpGet]
+    public async Task<IActionResult> GetAuthorsAsync([FromQuery(Name = "page")] int page = 1, [FromQuery(Name = "pageSize")] int pageSize = 10)
+    {
+        var result = await _libraryService.GetAuthorsAsync(page, pageSize);
+
+        return result.Match(
+            success => PagedResult(page, pageSize, success.Value.Select(x => x.Map()).ToList()),
+            error => InternalError()
+        );
     }
 }
diff --git a/src/GitHubActionsDemo.Api/Controllers/BaseController.cs b/src/GitHubActionsDemo.Api/Controllers/BaseController.cs
new file mode 100644
index 0000000..857a05e
--- /dev/null
+++ b/src/GitHubActionsDemo.Api/Controllers/BaseController.cs
@@ -0,0 +1,19 @@
+using System.Collections;
+using System.Net;
+using GitHubActionsDemo.Api.Models;
+using Microsoft.AspNetCore.Mvc;
+
+namespace GitHubActionsDemo.Api.Controllers;
+
+public class BaseController : ControllerBase
+{
+    public IActionResult InternalError()
+    {
+        return new StatusCodeResult((int)HttpStatusCode.InternalServerError);
+    }
+
+    public IActionResult PagedResult<T>(int page, int pageSize, T result) where T : IList
+    {
+        return Ok(new PagedResponse<T>(page, pageSize, result));
+    }
+}
\ No newline at end of file
diff --git a/src/GitHubActionsDemo.Api/Controllers/BooksController.cs b/src/GitHubActionsDemo.Api/Controllers/BooksController.cs
index 3d20072..dea4b18 100644
--- a/src/GitHubActionsDemo.Api/Controllers/BooksController.cs
+++ b/src/GitHubActionsDemo.Api/Controllers/BooksController.cs
@@ -7,38 +7,46 @@ namespace GitHubActionsDemo.Api.Controllers;
 
 [ApiController]
 [Route("[controller]")]
-public class BooksController : ControllerBase
+public class BooksController : BaseController
 {
-    private readonly ILogger<BooksController> _logger;
     private readonly ILibraryService _libraryService;
 
     public BooksController(
-        ILogger<BooksController> logger,
         ILibraryService libraryService
     )
     {
-        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         _libraryService = libraryService ?? throw new ArgumentNullException(nameof(libraryService));
     }
 
     [HttpGet]
-    public async Task<IEnumerable<BookResponse>> GetBooksAsync(int page = 0, int pageSize = 10)
+    public async Task<IActionResult> GetBooksAsync([FromQuery(Name = "page")] int page = 1, [FromQuery(Name = "pageSize")] int pageSize = 10)
     {
-        var books = await _libraryService.GetBooksAsync(page, pageSize);
-        return books.Select(x => x.Map());
+        var result = await _libraryService.GetBooksAsync(page, pageSize);
+
+        return result.Match(
+            success => PagedResult(page, pageSize, success.Value.Select(x => x.Map()).ToList()),
+            error => InternalError()
+        );
     }
 
     [HttpGet("{bookId}")]
-    public async Task<BookResponse> GetBookAsync(int bookId)
+    public async Task<IActionResult> GetBookAsync(int bookId)
     {
-        var book = await _libraryService.GetBookAsync(bookId);
-        return book.Map();
+        var result = await _libraryService.GetBookAsync(bookId);
+        return result.Match(
+            success => Ok(success.Value.Map()),
+            notfound => NotFound(),
+            error => InternalError()
+        );
     }
 
     [HttpPost]
-    public async Task<BookResponse> AddBookAsync(BookRequest bookRequest)
+    public async Task<IActionResult> AddBookAsync([FromBody] BookRequest bookRequest)
     {
-        var book = await _libraryService.AddBookAsync(bookRequest.Map());
-        return book.Map();
+        var result = await _libraryService.AddBookAsync(bookRequest.Map());
+        return result.Match(
+            success => Ok(success.Value.Map()),
+            error => InternalError()
+        );
     }
 }
diff --git a/src/GitHubActionsDemo.Api/GitHubActionsDemo.Api.csproj b/src/GitHubActionsDemo.Api/GitHubActionsDemo.Api.csproj
index 9a28efe..1cb6438 100644
--- a/src/GitHubActionsDemo.Api/GitHubActionsDemo.Api.csproj
+++ b/src/GitHubActionsDemo.Api/GitHubActionsDemo.Api.csproj
@@ -9,6 +9,11 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="7.0.5" />
+    <PackageReference Include="OneOf" Version="3.0.255" />
+    <PackageReference Include="Serilog" Version="3.0.1" />
+    <PackageReference Include="Serilog.Extensions.Logging" Version="7.0.0" />
+    <PackageReference Include="Serilog.Settings.Configuration" Version="7.0.0" />
+    <PackageReference Include="Serilog.Sinks.Console" Version="4.1.0" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
   </ItemGroup>
 
diff --git a/src/GitHubActionsDemo.Api/Models/BookRequest.cs b/src/GitHubActionsDemo.Api/Models/BookRequest.cs
index 1d099a8..d84d225 100644
--- a/src/GitHubActionsDemo.Api/Models/BookRequest.cs
+++ b/src/GitHubActionsDemo.Api/Models/BookRequest.cs
@@ -5,5 +5,5 @@ public class BookRequest
     public string Title { get; set; }
     public int AuthorId { get; set; }
     public string Isbn { get; set; }
-    public DateOnly DatePublished { get; set; }
+    public DateTime DatePublished { get; set; }
 }
diff --git a/src/GitHubActionsDemo.Api/Models/BookResponse.cs b/src/GitHubActionsDemo.Api/Models/BookResponse.cs
index 9b340ad..afc0dcd 100644
--- a/src/GitHubActionsDemo.Api/Models/BookResponse.cs
+++ b/src/GitHubActionsDemo.Api/Models/BookResponse.cs
@@ -7,7 +7,7 @@ public class BookResponse
         string title,
         AuthorResponse author,
         string isbn,
-        DateOnly datePublished,
+        DateTime datePublished,
         DateTime dateCreated,
         DateTime dateModified
     )
@@ -25,7 +25,7 @@ public class BookResponse
     public string Title { get; }
     public AuthorResponse Author { get; }
     public string Isbn { get; }
-    public DateOnly DatePublished { get; }
+    public DateTime DatePublished { get; }
     public DateTime DateCreated { get; }
     public DateTime DateModified { get; }
 }
diff --git a/src/GitHubActionsDemo.Api/Models/PagedResponse.cs b/src/GitHubActionsDemo.Api/Models/PagedResponse.cs
new file mode 100644
index 0000000..8125a9c
--- /dev/null
+++ b/src/GitHubActionsDemo.Api/Models/PagedResponse.cs
@@ -0,0 +1,18 @@
+using System.Collections;
+namespace GitHubActionsDemo.Api.Models;
+
+public class PagedResponse<T> where T : IList
+{
+    public PagedResponse(int page, int pageSize, T result)
+    {
+        Page = page;
+        PageSize = pageSize;
+        Result = result;
+        Count = result.Count;
+    }
+
+    public int Page { get; }
+    public int PageSize { get; }
+    public int Count { get; }
+    public T Result { get; }
+}
\ No newline at end of file
diff --git a/src/GitHubActionsDemo.Api/Models/PagedResult.cs b/src/GitHubActionsDemo.Api/Models/PagedResult.cs
new file mode 100644
index 0000000..e69de29
diff --git a/src/GitHubActionsDemo.Api/Program.cs b/src/GitHubActionsDemo.Api/Program.cs
index 60385d4..6b9e4ac 100644
--- a/src/GitHubActionsDemo.Api/Program.cs
+++ b/src/GitHubActionsDemo.Api/Program.cs
@@ -1,8 +1,15 @@
 using GitHubActionsDemo.Service.Infrastructure;
 using GitHubActionsDemo.Persistance.Infrastructure;
+using Serilog;
 
 var builder = WebApplication.CreateBuilder(args);
 
+builder.Logging.ClearProviders();
+var logger = new LoggerConfiguration()
+    .WriteTo.Console()
+    .CreateLogger();
+builder.Logging.AddSerilog(logger);
+
 builder.Services.AddControllers();
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
diff --git a/src/GitHubActionsDemo.Api/appsettings.Development.json b/src/GitHubActionsDemo.Api/appsettings.Development.json
index 971f863..fff4625 100644
--- a/src/GitHubActionsDemo.Api/appsettings.Development.json
+++ b/src/GitHubActionsDemo.Api/appsettings.Development.json
@@ -8,5 +8,11 @@
       "Default": "Information",
       "Microsoft.AspNetCore": "Warning"
     }
+  },
+  "Serilog": {
+    "Using": ["Serilog.Sinks.Console"],
+    "MinimumLevel": {
+      "Default": "Information"
+    }
   }
 }
diff --git a/src/GitHubActionsDemo.Api/appsettings.json b/src/GitHubActionsDemo.Api/appsettings.json
index b3330a5..75480cb 100644
--- a/src/GitHubActionsDemo.Api/appsettings.json
+++ b/src/GitHubActionsDemo.Api/appsettings.json
@@ -9,5 +9,11 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
+  "Serilog": {
+    "Using": ["Serilog.Sinks.Console"],
+    "MinimumLevel": {
+      "Default": "Information"
+    }
+  },
   "AllowedHosts": "*"
 }
diff --git a/src/GitHubActionsDemo.Persistance/ILibraryRespository.cs b/src/GitHubActionsDemo.Persistance/ILibraryRespository.cs
index 097624a..143c819 100644
--- a/src/GitHubActionsDemo.Persistance/ILibraryRespository.cs
+++ b/src/GitHubActionsDemo.Persistance/ILibraryRespository.cs
@@ -6,7 +6,8 @@ public interface ILibraryRespository
 {
     Task<IEnumerable<BookDb>> GetBooksAsync(int page, int pageSize);
     Task<BookDb> GetBookAsync(int bookId);
-    Task<BookDb> AddBookAsync(NewBookDb book);
-    Task<AuthorDb> AddAuthorAsync(NewAuthorDb author);
+    Task<IEnumerable<AuthorDb>> GetAuthorsAsync(int page, int pageSize);
+    Task<int> AddBookAsync(NewBookDb book);
+    Task<int> AddAuthorAsync(NewAuthorDb author);
     Task<AuthorDb> GetAuthorAsync(int authorId);
 }
\ No newline at end of file
diff --git a/src/GitHubActionsDemo.Persistance/LibraryRespository.cs b/src/GitHubActionsDemo.Persistance/LibraryRespository.cs
index 23591ef..614e10a 100644
--- a/src/GitHubActionsDemo.Persistance/LibraryRespository.cs
+++ b/src/GitHubActionsDemo.Persistance/LibraryRespository.cs
@@ -12,19 +12,61 @@ public class LibraryRespository : ILibraryRespository
         _dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
     }
 
-    public async Task<AuthorDb> AddAuthorAsync(NewAuthorDb author)
+    public async Task<int> AddAuthorAsync(NewAuthorDb author)
     {
-        throw new NotImplementedException();
+        var sql = @$"INSERT INTO authors (first_name, last_name, date_created, date_modified)
+                     VALUES(@FirstName, @LastName, @DateCreated, @DateModified);
+                     SELECT LAST_INSERT_ID();";
+
+        using var connection = _dbContext.CreateConnection();
+        return await connection.QueryFirstOrDefaultAsync<int>(sql, author);
     }
 
     public async Task<AuthorDb> GetAuthorAsync(int authorId)
     {
-        throw new NotImplementedException();
+        var sql = @$"SELECT
+                        a.author_id AS {nameof(AuthorDb.AuthorId)},
+                        a.first_name AS {nameof(AuthorDb.FirstName)},
+                        a.last_name AS {nameof(AuthorDb.LastName)},
+                        a.date_created AS Author{nameof(AuthorDb.DateCreated)},
+                        a.date_modified AS Author{nameof(AuthorDb.DateModified)}
+                    FROM authors a
+                    WHERE a.author_id = @AuthorId;";
+
+        var param = new
+        {
+            AuthorId = authorId
+        };
+
+        using var connection = _dbContext.CreateConnection();
+        return await connection.QueryFirstOrDefaultAsync<AuthorDb>(sql, param);
     }
 
-    public async Task<BookDb> AddBookAsync(NewBookDb book)
+    public async Task<IEnumerable<AuthorDb>> GetAuthorsAsync(int page, int pageSize)
     {
-        throw new NotImplementedException();
+        var sql = @$"SELECT
+                        a.author_id AS {nameof(AuthorDb.AuthorId)},
+                        a.first_name AS {nameof(AuthorDb.FirstName)},
+                        a.last_name AS {nameof(AuthorDb.LastName)},
+                        a.date_created AS Author{nameof(AuthorDb.DateCreated)},
+                        a.date_modified AS Author{nameof(AuthorDb.DateModified)}
+                    FROM authors a
+                    ORDER BY author_id
+                    LIMIT {pageSize}
+                    OFFSET {pageSize * (page - 1)};";
+
+        using var connection = _dbContext.CreateConnection();
+        return await connection.QueryAsync<AuthorDb>(sql);
+    }
+
+    public async Task<int> AddBookAsync(NewBookDb book)
+    {
+        var sql = @$"INSERT INTO books (title, author_id, isbn, date_published, date_created, date_modified)
+                     VALUES(@Title, @AuthorId, @Isbn, @DatePublished, @DateCreated, @DateModified);
+                     SELECT LAST_INSERT_ID();";
+
+        using var connection = _dbContext.CreateConnection();
+        return await connection.QueryFirstOrDefaultAsync<int>(sql, book);
     }
 
     public async Task<BookDb> GetBookAsync(int bookId)
@@ -50,16 +92,14 @@ public class LibraryRespository : ILibraryRespository
             BookId = bookId
         };
 
-        using (var connection = _dbContext.CreateConnection())
+        using var connection = _dbContext.CreateConnection();
+        var books = await connection.QueryAsync<BookDb, AuthorDb, BookDb>(sql, (book, author) =>
         {
-            var books = await connection.QueryAsync<BookDb, AuthorDb, BookDb>(sql, (book, author) =>
-            {
-                book.Author = author;
-                return book;
-            }, param, splitOn: nameof(AuthorDb.AuthorId));
+            book.Author = author;
+            return book;
+        }, param, splitOn: nameof(AuthorDb.AuthorId));
 
-            return books?.FirstOrDefault();
-        }
+        return books?.FirstOrDefault();
     }
 
     public async Task<IEnumerable<BookDb>> GetBooksAsync(int page, int pageSize)
@@ -78,15 +118,16 @@ public class LibraryRespository : ILibraryRespository
                         a.date_modified AS Author{nameof(AuthorDb.DateModified)}
                     FROM books b
                     INNER JOIN authors a ON a.author_id = b.author_id
-                    ORDER BY b.book_id;";
+                    ORDER BY b.book_id
+                    LIMIT {pageSize}
+                    OFFSET {pageSize * (page - 1)};";
 
-        using (var connection = _dbContext.CreateConnection())
+        using var connection = _dbContext.CreateConnection();
+
+        return await connection.QueryAsync<BookDb, AuthorDb, BookDb>(sql, (book, author) =>
         {
-            return await connection.QueryAsync<BookDb, AuthorDb, BookDb>(sql, (book, author) =>
-            {
-                book.Author = author;
-                return book;
-            }, splitOn: nameof(AuthorDb.AuthorId));
-        }
+            book.Author = author;
+            return book;
+        }, splitOn: nameof(AuthorDb.AuthorId));
     }
 }
diff --git a/src/GitHubActionsDemo.Persistance/Models/BookDb.cs b/src/GitHubActionsDemo.Persistance/Models/BookDb.cs
index 23bb74a..60c6dc6 100644
--- a/src/GitHubActionsDemo.Persistance/Models/BookDb.cs
+++ b/src/GitHubActionsDemo.Persistance/Models/BookDb.cs
@@ -6,7 +6,7 @@ public class BookDb
     public string Title { get; set; }
     public AuthorDb Author { get; set; }
     public string Isbn { get; set; }
-    public DateOnly DatePublished { get; set; }
+    public DateTime DatePublished { get; set; }
     public DateTime DateCreated { get; set; }
     public DateTime DateModified { get; set; }
 }
diff --git a/src/GitHubActionsDemo.Persistance/Models/NewBookDb.cs b/src/GitHubActionsDemo.Persistance/Models/NewBookDb.cs
index 6144cf6..2dbad6c 100644
--- a/src/GitHubActionsDemo.Persistance/Models/NewBookDb.cs
+++ b/src/GitHubActionsDemo.Persistance/Models/NewBookDb.cs
@@ -6,7 +6,7 @@ public class NewBookDb
         string title,
         int authorId,
         string isbn,
-        DateOnly datePublished,
+        DateTime datePublished,
         DateTime dateCreated,
         DateTime dateModified
     )
@@ -23,7 +23,7 @@ public class NewBookDb
     public string Title { get; }
     public int AuthorId { get; }
     public string Isbn { get; }
-    public DateOnly DatePublished { get; }
+    public DateTime DatePublished { get; }
     public DateTime DateCreated { get; }
     public DateTime DateModified { get; }
 }
\ No newline at end of file
diff --git a/src/GitHubActionsDemo.Service/GitHubActionsDemo.Service.csproj b/src/GitHubActionsDemo.Service/GitHubActionsDemo.Service.csproj
index 5216cb4..f5199b4 100644
--- a/src/GitHubActionsDemo.Service/GitHubActionsDemo.Service.csproj
+++ b/src/GitHubActionsDemo.Service/GitHubActionsDemo.Service.csproj
@@ -8,6 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0" />
+    <PackageReference Include="OneOf" Version="3.0.255" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/GitHubActionsDemo.Service/ILibraryService.cs b/src/GitHubActionsDemo.Service/ILibraryService.cs
index 8b52d9d..387e7fa 100644
--- a/src/GitHubActionsDemo.Service/ILibraryService.cs
+++ b/src/GitHubActionsDemo.Service/ILibraryService.cs
@@ -1,11 +1,16 @@
 using GitHubActionsDemo.Service.Models;
+using OneOf;
+using OneOf.Types;
+using NotFound = OneOf.Types.NotFound;
 
 namespace GitHubActionsDemo.Service;
 
 public interface ILibraryService
 {
-    Task<IEnumerable<Book>> GetBooksAsync(int page, int pageSize);
-    Task<Book> GetBookAsync(int bookId);
-    Task<Book> AddBookAsync(NewBook book);
-    Task<Author> AddAuthorAsync(NewAuthor author);
+    Task<OneOf<Success<IEnumerable<Book>>, Error>> GetBooksAsync(int page, int pageSize);
+    Task<OneOf<Success<Book>, NotFound, Error>> GetBookAsync(int bookId);
+    Task<OneOf<Success<Book>, Error>> AddBookAsync(NewBook newBook);
+    Task<OneOf<Success<Author>, Error>> AddAuthorAsync(NewAuthor newAuthor);
+    Task<OneOf<Success<Author>, NotFound, Error>> GetAuthorAsync(int authorId);
+    Task<OneOf<Success<IEnumerable<Author>>, Error>> GetAuthorsAsync(int page, int pageSize);
 }
\ No newline at end of file
diff --git a/src/GitHubActionsDemo.Service/LibraryService.cs b/src/GitHubActionsDemo.Service/LibraryService.cs
index 1bff707..436d052 100644
--- a/src/GitHubActionsDemo.Service/LibraryService.cs
+++ b/src/GitHubActionsDemo.Service/LibraryService.cs
@@ -1,39 +1,122 @@
 using GitHubActionsDemo.Persistance;
 using GitHubActionsDemo.Service.Mappers;
 using GitHubActionsDemo.Service.Models;
+using Microsoft.Extensions.Logging;
+using OneOf;
+using OneOf.Types;
+using NotFound = OneOf.Types.NotFound;
 
 namespace GitHubActionsDemo.Service;
 
 public class LibraryService : ILibraryService
 {
     private readonly ILibraryRespository _libraryRepository;
+    private readonly ILogger<LibraryService> _logger;
 
-    public LibraryService(ILibraryRespository libraryRepository)
+    public LibraryService(
+        ILibraryRespository libraryRepository,
+        ILogger<LibraryService> logger
+    )
     {
         _libraryRepository = libraryRepository ?? throw new ArgumentNullException(nameof(libraryRepository));
+        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
     }
 
-    public async Task<Author> AddAuthorAsync(NewAuthor newAuthor)
+    public async Task<OneOf<Success<Author>, Error>> AddAuthorAsync(NewAuthor newAuthor)
     {
-        var author = await _libraryRepository.AddAuthorAsync(newAuthor.Map());
-        return author.Map();
+        try
+        {
+            var authorId = await _libraryRepository.AddAuthorAsync(newAuthor.Map());
+            var author = await _libraryRepository.GetAuthorAsync(authorId);
+            return new Success<Author>(author.Map());
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error adding author");
+            return new Error();
+        }
     }
 
-    public async Task<Book> AddBookAsync(NewBook newBook)
+    public async Task<OneOf<Success<Book>, Error>> AddBookAsync(NewBook newBook)
     {
-        var book = await _libraryRepository.AddBookAsync(newBook.Map());
-        return book.Map();
+        try
+        {
+            var bookId = await _libraryRepository.AddBookAsync(newBook.Map());
+            var book = await _libraryRepository.GetBookAsync(bookId);
+            return new Success<Book>(book.Map());
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error adding book");
+            return new Error();
+        }
     }
 
-    public async Task<Book> GetBookAsync(int bookId)
+    public async Task<OneOf<Success<Author>, NotFound, Error>> GetAuthorAsync(int authorId)
     {
-        var book = await _libraryRepository.GetBookAsync(bookId);
-        return book.Map();
+        try
+        {
+            var author = await _libraryRepository.GetAuthorAsync(authorId);
+            if (author == null)
+                return new NotFound();
+
+            return new Success<Author>(author.Map());
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error getting author");
+            return new Error();
+        }
     }
 
-    public async Task<IEnumerable<Book>> GetBooksAsync(int page, int pageSize)
+    public async Task<OneOf<Success<IEnumerable<Author>>, Error>> GetAuthorsAsync(int page, int pageSize)
     {
-        var books = await _libraryRepository.GetBooksAsync(page, pageSize);
-        return books?.Select(book => book.Map()) ?? new List<Book>();
+        try
+        {
+            var authors = await _libraryRepository.GetAuthorsAsync(page, pageSize);
+            if (authors == null)
+                return new Success<IEnumerable<Author>>();
+
+            return new Success<IEnumerable<Author>>(authors?.Select(author => author.Map()));
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error getting authors");
+            return new Error();
+        }
+    }
+
+    public async Task<OneOf<Success<Book>, NotFound, Error>> GetBookAsync(int bookId)
+    {
+        try
+        {
+            var book = await _libraryRepository.GetBookAsync(bookId);
+            if (book == null)
+                return new NotFound();
+
+            return new Success<Book>(book.Map());
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error getting book");
+            return new Error();
+        }
+    }
+
+    public async Task<OneOf<Success<IEnumerable<Book>>, Error>> GetBooksAsync(int page, int pageSize)
+    {
+        try
+        {
+            var books = await _libraryRepository.GetBooksAsync(page, pageSize);
+            if (books == null)
+                return new Success<IEnumerable<Book>>();
+
+            return new Success<IEnumerable<Book>>(books?.Select(book => book.Map()));
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error getting books");
+            return new Error();
+        }
     }
 }
\ No newline at end of file
diff --git a/src/GitHubActionsDemo.Service/Models/Book.cs b/src/GitHubActionsDemo.Service/Models/Book.cs
index d334c29..91e6742 100644
--- a/src/GitHubActionsDemo.Service/Models/Book.cs
+++ b/src/GitHubActionsDemo.Service/Models/Book.cs
@@ -7,7 +7,7 @@ public class Book
         string title,
         Author author,
         string isbn,
-        DateOnly datePublished,
+        DateTime datePublished,
         DateTime dateCreated,
         DateTime dateModified
     )
@@ -25,7 +25,7 @@ public class Book
     public string Title { get; }
     public Author Author { get; }
     public string Isbn { get; }
-    public DateOnly DatePublished { get; }
+    public DateTime DatePublished { get; }
     public DateTime DateCreated { get; }
     public DateTime DateModified { get; }
 }
diff --git a/src/GitHubActionsDemo.Service/Models/NewBook.cs b/src/GitHubActionsDemo.Service/Models/NewBook.cs
index 1679f5f..6234ca6 100644
--- a/src/GitHubActionsDemo.Service/Models/NewBook.cs
+++ b/src/GitHubActionsDemo.Service/Models/NewBook.cs
@@ -6,7 +6,7 @@ public class NewBook
         string title,
         int authorId,
         string isbn,
-        DateOnly datePublished
+        DateTime datePublished
     )
     {
         Title = title;
@@ -18,5 +18,5 @@ public class NewBook
     public string Title { get; }
     public int AuthorId { get; }
     public string Isbn { get; }
-    public DateOnly DatePublished { get; }
+    public DateTime DatePublished { get; }
 }
\ No newline at end of file
diff --git a/src/GitHubActionsDemo.Service/Models/NotFound.cs b/src/GitHubActionsDemo.Service/Models/NotFound.cs
new file mode 100644
index 0000000..6ea7b8c
--- /dev/null
+++ b/src/GitHubActionsDemo.Service/Models/NotFound.cs
@@ -0,0 +1,6 @@
+namespace GitHubActionsDemo.Service.Models;
+
+public class NotFound
+{
+
+}
\ No newline at end of file