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Publication Order of Barker & Llewelyn Books
| Some Danger Involved | (2004) | Hardcover  Paperback  Kindle |
| To Kingdom Come | (2005) | Hardcover  Paperback  Kindle |
| The Limehouse Text | (2006) | Hardcover  Paperback  Kindle |
| The Hellfire Conspiracy | (2007) | Hardcover  Paperback  Kindle |
| The Black Hand | (2008) | Hardcover  Paperback  Kindle |
| Fatal Enquiry | (2014) | Hardcover  Paperback  Kindle |
| Anatomy of Evil | (2015) | Hardcover  Paperback  Kindle |
| Hell Bay | (2016) | Hardcover  Paperback  Kindle |
| An Awkward Way to Die | (2017) | Hardcover  Paperback  Kindle |
| Old Scores | (2017) | Hardcover  Paperback  Kindle |
| Blood Is Blood | (2018) | Hardcover  Paperback  Kindle |
| Lethal Pursuit | (2019) | Hardcover  Paperback  Kindle |
| Dance with Death | (2021) | Hardcover  Paperback  Kindle |
| Fierce Poison | (2022) | Hardcover  Paperback  Kindle |