The Devil Colony: A Sigma Force Novel

The Doomsday Key: A Sigma Force Novel

The Eye of God: A Sigma Force Novel

The 6th Extinction: A Sigma Force Novel

Bloodline: A Sigma Force Novel

Map of Bones: A Sigma Force Novel

Crucible: A Thriller

The Bone Labyrinth: A Sigma Force Novel

Sandstorm

The Hunt For Atlantis (Wilde/Chase 1)

Kingdom of Darkness (Wilde/Chase 10)

The Valhalla Prophecy (Wilde/Chase 9)

The Tombs: FARGO Adventures #4

The Seventh Plague: A Sigma Force Novel

The Blood Gospel: The Order of the Sanguines Series