Tracker: A Short Story Exclusive (Sigma Force Series)
The Midnight Watch: A Sigma Force Short Story (Kindle Single) (Sigma Force Novels)
Crash and Burn: A Sigma Force Short Story (Kindle Single)
Ghost Ship: A Sigma Force Short Story
The Devil Colony: A Sigma Force Novel (Sigma Force Series Book 7)
Bloodline: A Sigma Force Novel (Sigma Force Series Book 8)
The Eye of God: A Sigma Force Novel (Sigma Force Series Book 9)
City of Screams: A Short Story Exclusive (Order of the Sanguines Series)
Blood Brothers: A Short Story Exclusive (Order of the Sanguines Series)