Daughters of Liberty
1. Patsy's Discovery (1997)
2. Patsy and the Declaration (1997)
3. Barbara's Escape (1997)

Young Founders
1. 1870: Not With Our Blood (2000)
2. 1609: Winter of the Dead: A Novel About the Founding of Jamestown (2000)
3. 1776: Sons of Liberty (2000)
4. 1863: A House Divided: A Novel of the Civil War (2000)

Law and Order
Special Victims Unit (2002)
Drop Dead (2005) (with William P Wood)

Millennium
4. The Wild and the Innocent (1998)

Dark Shadows (with Stephen M Rainey)
2. Dreams of the Dark (1999)

Buffy the Vampire Slayer (Young Adult)
12. Power of Persuasion (1999)

Kolchak: The Night Stalker (with Pierce Askegren, Mike Baron, Rachel Caine, Mark Dawidziak, Tom DeFalco, P N Elrod, John Everson, Joe Gentile, Christopher Golden, John Ostrander, Gary Phillips, Robert J Randisi, James Reasoner and Richard Dean Starr)
The Night Stalker Casebook (2006)

Tudors
2. King Takes Queen (2008)