Group Fifteen Files Books in Order

The recommended reading order for the Group Fifteen Files series is publication order: 1. Scorpion (With: Mark Dawson) (2017), 2. Witness X (By: Scott Mariani,Mark Dawson) (2017), 3. Little Sister (By: Mark Dawson,Michael Ridpath) (2018), 4. The Vault (By: Mark Dawson) (2020), 5. Wormwood (By: Mark Dawson) (2022). This is generally the best way to experience the story as the author intended.

The Group Fifteen Files series by Steve Cavanagh contains 5 books. The series began in 2017 and continues to be a popular choice for readers.

The Group Fifteen Files series is written by Steve Cavanagh. You can find more books and series by this author on our website.