* _The Last Witches of Westmark_ (2017)
* _The Witches: Circle in the Mist_ (2018)
* _The Witches: Curse of Ashwood Hall_ (2019)
* _The Witches: Coven on Crowthorne Road_ (2020)
* _The Ghosts of Thorwald Place_ (2021)
Short Story Collections
* _Stories from Westmark Hall_ (2021)
Novelizations
* _Jumanji: Welcome to the Jungle_ (2017)
Screenplays
* _Uncharted Waters_ (unproduced)
* _The House Between Time_ (unproduced)
* _Shadow and Bone_ (TV series, 2021)
Video Games
* _Warhammer 40,000: Space Marine_ (2011)
* _Call of Duty: Black Ops II_ (2012)
* _Call of Duty: Advanced Warfare_ (2014)
* _Call of Duty: Black Ops III_ (2015)
* _Gears of War 4_ (2016)
* _Destiny 2_ (2017)