| title | ISBN-13 | year of publication |
|---|---|---|
| Galba's Men: The Four Emperors Series: Book II | 978-1-78181-512-0 | 2016 |
| Galba's Men: The Four Emperors Series: Book II | 978-1-78241-380-6 | 2016 |
| Otho's Regret: Book III: The Four Emperors Series | 978-1-78220-266-0 | 2017 |
| Vitellius' Feast: The Four Emperors Series: Book IV | 978-1-78220-267-7 | 2018 |