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Publication Order of Jack Lennon Books
| The Twelve / The Ghosts of Belfast | (2009) | Hardcover  Paperback  Kindle |
| Collusion | (2010) | Hardcover  Paperback  Kindle |
| Stolen Souls | (2011) | Hardcover  Paperback  Kindle |
| The Final Silence | (2014) | Hardcover  Paperback  Kindle |
Publication Order of DCI Serena Flanagan Books
| Those We Left Behind | (2015) | Hardcover  Paperback  Kindle |
| So Say the Fallen | (2016) | Hardcover  Paperback  Kindle |