The below is a list of all novels or other writings co-written with other authors.
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Alexis Silver Series (VFH world)
- Silver Light
- Deep Silver
- Silver Quarrel
- Silver Crucible
Samantha Moon Vampire for Hire Series
- Moon Master
- Dead Moon
- Lost Moon
- Vampire Destiny
- Infinite Moon
- Vampire Empress
Samantha Moon Short Stories (VFH world)
Samantha Moon Origins Series (VFH world)
Immortal Operative Series
Four Elements Series
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- Operation: Chimera (with Tony Healey)
- The Dysfunctional Conspiracy (with Christopher Veltmann)