| Series | | Books |
| |
| Susanna And The Spy | | (2011) |
| | | (2012) |
| |
| Other | | Twilight of Avalon [Twilight of Avalon Trilogy] (2009) |
| | | Dark Moon of Avalon [Twilight of Avalon Trilogy] (2010) |
| | | Sunrise of Avalon [Twilight of Avalon Trilogy] (2011) |
| | | Georgiana Darcy's Diary [Pride and Prejudice Chronicles] (2011) |
| | | Pemberley to Waterloo [Pride and Prejudice Chronicles] (2011) |
| | | Margaret Dashwood's Diary (2014) |
| | | Kitty Bennet's Diary [Pride and Prejudice Chronicles] (2014) |
| | | The Crown Jewel Mystery [Sherlock and Lucy Mystery] (2017) |
| | | Death at the Diogenes Club [Sherlock and Lucy Mystery] (2017) |
| | | The Jubilee Problem [Sherlock and Lucy Mystery] (2017) |
| | | Remember, Remember [Sherlock and Lucy Mystery] (2017) |
| | | The Return of the Ripper [Sherlock and Lucy Mystery] (2018) |
| | | Flynn's Christmas [Sherlock and Lucy Mystery] (2018) |
| | | The Clown on the High Wire [Sherlock and Lucy Mystery] (2019) |
| | | Die Again, Mr. Holmes [Sherlock and Lucy Mystery] (2019) |
| | | Christmas at Baskerville Hall [Sherlock and Lucy Mystery] (2019) |
| | | The Vanishing Medium [Sherlock and Lucy Mystery] (2019) |
| | | A Fancy-Dress Death [Sherlock and Lucy Mystery] (2019) |
| | | The Cobra in the Monkey Cage [Sherlock and Lucy Mystery] (2019) |
| | | The Sons of Helios [Sherlock and Lucy Mystery] (2019) |
| | | Watson on the Orient Express [Sherlock and Lucy Mystery] (2020) |
| | | Christmas on the Nile [Sherlock and Lucy Mystery] (2020) |
| | | The Coded Blue Envelope [Sherlock and Lucy Mystery] (2020) |
| | | The Curse of Cleopatra's Needle [Sherlock and Lucy Mystery] (2020) |
| | | The Solitary Witness [Sherlock and Lucy Mystery] (2020) |
| | | The Sherlock Holmes and Lucy James Stories [Sherlock and Lucy Mystery] (2020) |
| | | Kidnapped at the Tower [Sherlock and Lucy Mystery] (2020) |
| | | Five Pink Ladies [Sherlock and Lucy Mystery] (2020) |
| | | The Body in the Bookseller's [Sherlock and Lucy Mystery] (2020) |
| | | The Missing Mariner [Sherlock and Lucy Mystery] (2021) |
| | | Guarded Ground [Becky and Flynn Mystery] (2021) |
| | | Holmes Picks a Winner [Sherlock and Lucy Mystery] (2021) |
| | | Holmes takes a Holiday [Sherlock and Lucy Mystery] (2021) |
| | | The Bloomsbury Guru [Sherlock and Lucy Mystery] (2021) |
| | | Murder at the Royal Observatory [Sherlock and Lucy Mystery] (2021) |
| | | Powder Island [Sherlock and Lucy Mystery] (2021) |
| | | Galahad's Castle [Sherlock and Lucy Mystery] (2022) |
| | | The Loch Ness Horror [Sherlock and Lucy Mystery] (2022) |
| | | Hidden Harm [Becky and Flynn Mystery] (2022) |
| | | Watch and Ward [Becky and Flynn Mystery] (2022) |
| | | The Adair Murders [Sherlock and Lucy Mystery] (2023) |
| | | The Cornwall Mermaid [Sherlock and Lucy Mystery] (2023) |
| | | Safe You Sleep [Becky and Flynn Mystery] (2023) |
| | | Star-Sown Sky [Becky and Flynn Mystery] (2023) |
| | | Miss Nightingale's Gala [Sherlock and Lucy Mystery] (2024) |
| |