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Publication Order of The Early Casebook of Sherlock Holmes Books
| Sherlock Holmes and the Rosetta Stone Mystery | (2021) | Hardcover  Paperback  Kindle |
| Sherlock Holmes and the Explorers’ Club | (2022) | Hardcover  Paperback  Kindle |
| Sherlock Holmes and the Ebony Idol | (2022) | Hardcover  Paperback  Kindle |
Publication Order of Frances Doughty Books
| The Poisonous Seed | (2011) | Hardcover  Paperback  Kindle |
| The Daughters of Gentlemen | (2012) | Hardcover  Paperback  Kindle |
| A Case of Doubtful Death | (2013) | Hardcover  Paperback  Kindle |
| An Appetite for Murder | (2014) | Hardcover  Paperback  Kindle |
| The Children of Silence | (2015) | Hardcover  Paperback  Kindle |
| Death in Bayswater | (2016) | Hardcover  Paperback  Kindle |
| A True and Faithful Brother | (2017) | Hardcover  Paperback  Kindle |
| Murder at the Bayswater Bicycle Club | (2018) | Hardcover  Paperback  Kindle |
Publication Order of Mina Scarletti Books
| Mr Scarletti’s Ghost | (2015) | Hardcover  Paperback  Kindle |
| The Royal Ghost | (2016) | Hardcover  Paperback  Kindle |
| An Unquiet Ghost | (2018) | Hardcover  Paperback  Kindle |
| The Ghost of Hollow House | (2019) | Hardcover  Paperback  Kindle |
| His Father’s Ghost | (2020) | Hardcover  Paperback  Kindle |
| The Cyanide Ghost | (2021) | Hardcover  Paperback  Kindle |
Publication Order of Non-Fiction Books
| Essex Murders | (2004) | Hardcover  Paperback  Kindle |
| Whiteley’s Folly | (2004) | Hardcover  Paperback  Kindle |
| Chloroform | (2005) | Hardcover  Paperback  Kindle |
| Gloucestershire Murders | (2005) | Hardcover  Paperback  Kindle |
| The Crooks Who Conned Millions | (2006) | Hardcover  Paperback  Kindle |
| Notorious Blasted Rascal | (2008) | Hardcover  Paperback  Kindle |
| Kent Murders | (2009) | Hardcover  Paperback  Kindle |
| Middlesex Murders | (2010) | Hardcover  Paperback  Kindle |
| The Big Book of Greater London Murders | (2010) | Hardcover  Paperback  Kindle |
| Cruel Deeds and Dreadful Calamities | (2011) | Hardcover  Paperback  Kindle |
| The Illustrated Police News | (2011) | Hardcover  Paperback  Kindle |
| More Essex Murders | (2011) | Hardcover  Paperback  Kindle |
| Fraudsters and Charlatans | (2012) | Hardcover  Paperback  Kindle |
| The Marquess of Queensberry | (2013) | Hardcover  Paperback  Kindle |
| The Secret Poisoner | (2016) | Hardcover  Paperback  Kindle |