Sigma Force Series

1.Sandstorm

2.Map of Bones

3.Black Order

4.The Judas Strain

5.The Last Oracle

6.The Doomsday Key

7.The Devil Colony

8.Bloodline

9.The Eye of God

10.The 6th Extinction

11.The Bone Labyrinth

12.The Seventh Plague

13.The Demon Crown

14.Crucible

15.The Last Odyssey

16.Kingdom of Bones

17.Tides of Fire

18.Arkangel

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New and Classic Short Fiction

2.5.Kowalski's in Love

6.5.The Skeleton Key

7.5.Tracker

10.5.The Midnight Watch

11.5.Crash and Burn

12.5.Ghost Ship