Terminal Freeze

Full Wolf Moon: A Novel

The Third Gate: A Novel

Chrysalis: A Thriller

The Forgotten Room: A Novel

The Templar Legacy: A Novel

The 6th Extinction: A Sigma Force Novel

The Doomsday Key: A Sigma Force Novel

Sandstorm

The Eye of God: A Sigma Force Novel

Crucible: A Thriller

Kingdom of Bones: A Thriller

The Lincoln Myth: A Novel

Bloodline: A Sigma Force Novel

Map of Bones: A Sigma Force Novel