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Publication Order of Kingdom of Engines Books
Publication Order of Paradox P.I. Books
| Time of Death | (2020) | Hardcover  Paperback  Kindle |
| Electric Midnight | (2021) | Hardcover  Paperback  Kindle |
| The Clockwork Game | (2022) | Hardcover  Paperback  Kindle |
Publication Order of Skylighter Adventures Books
Publication Order of Time Travel Detective Mystery Books
| In Times Like These | (2013) | Hardcover  Paperback  Kindle |
| The Chronothon | (2015) | Hardcover  Paperback  Kindle |
| The Day After Never | (2016) | Hardcover  Paperback  Kindle |
| Clockwise & Gone | (2018) | Hardcover  Paperback  Kindle |
| The Warp Clock | (2018) | Hardcover  Paperback  Kindle |
| Agent of Time | (2020) | Hardcover  Paperback  Kindle |