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Publication Order of Frey & McGray Books
| The Strings of Murder | (2015) | Hardcover  Paperback  Kindle |
| The Hunt | (2015) | Hardcover  Paperback  Kindle |
| A Fever of the Blood | (2016) | Hardcover  Paperback  Kindle |
| A Mask of Shadows | (2017) | Hardcover  Paperback  Kindle |
| The Loch of the Dead | (2018) | Hardcover  Paperback  Kindle |
| The Darker Arts | (2019) | Hardcover  Paperback  Kindle |
| The Falling Shroud | (2020) | Hardcover  Paperback  Kindle |
| The Dance of the Serpents | (2020) | Hardcover  Paperback  Kindle |
| The Sign of the Devil | (2022) | Hardcover  Paperback  Kindle |