Thriller, Suspense

Action, Adventure | Thriller, Suspense

Bloodline (Sigma Force #8)

Action, Adventure | Short Stories | Thriller, Suspense

Tracker (Sigma Force #7.5)

Action, Adventure | Thriller, Suspense

The Devil Colony (Sigma Force #7)

Action, Adventure | Short Stories | Thriller, Suspense

The Skeleton Key (Sigma Force #6.5)

Action, Adventure | Thriller, Suspense

The Doomsday Key (Sigma Force #6)

Mystery, Detective | Short Stories | Thriller, Suspense

Crime Hits Home: A Collection of Stories from Crime Fiction's

Mystery, Detective | Short Stories | Thriller, Suspense

When a Stranger Comes to Town (Mystery Writers of America #2)

Mystery, Detective | Short Stories | Thriller, Suspense

Deadly Anniversaries: A Collection of Stories from Crime

Thriller, Suspense

With Friends Like These

Action, Adventure | Thriller, Suspense

The Last Oracle (Sigma Force #5)

Action, Adventure | Thriller, Suspense

The Judas Strain (Sigma Force #4)

Action, Adventure | Thriller, Suspense

Black Order (Sigma Force #3)