Heat Seekers
1. The Heat Seekers (2002)
2. The Blood Hunters (2004)

Engaging the Immediate (1987)
Prism of the Night: A Biography of Anne Rice (1991) (see Anne Rice)
Art of Learning: A Self-help Manual for Students (1992)
The Vampire Companion: The Official Guide to Anne Rice's the Vampire Chronicles (1993) (see Anne Rice)
The Anne Rice Trivia Book (1994) (see Anne Rice)
The Witches' Companion: The Official Guide to Anne Rice's Lives of the Mayfair Witches (1994) (see Anne Rice)
The Roquelaure Reader: A Companion to Anne Rice's Erotica (1996) (see Anne Rice)
Dean Koontz : A Writer's Biography (1997) (see Dean Koontz)
Quesadillas: Over 100 Fast, Fresh and Festive Recipes! (1997) (with Steven Ramsland)
Piercing the Darkness: Undercover with Vampires in America Today (1998)
Forensic Science of CSI (2001)
Bliss: Writing to Find Your True Self (2001)
Cemetery Stories (2001)
Ghost: Investigating the Other Side (2001)
The Criminal Mind: A Writer's Guide to Forensic Psychology (2002)
The Science of Vampires (2002)
The Unknown Darkness: Profiling the Predators Among Us (2003) (with Gregg O McCrary)
The Science of Cold Case Files (2004)
Inside the Minds of Mass Murderers (2005)
A Voice for the Dead (2005) (with James E Starrs)
The Human Predator (2005)
Inside the Minds of Serial Killers (2006)
The C.S.I. Effect (2006)
Inside the Minds of Health-Care Serial Killers (2007)
Beating the Devil's Game (2007)
Bethlehem Ghosts (2007) (with Dana DeVito)
Into the Devil's Den (2008) (with Tym Burkey, Dave Hall)
Murder in The Lehigh Valley (2008) (with Zachary Lysek)
True Stories of C.S.I. (2008)
The Devil's Dozen: How Cutting-edge Forensics Took Down 12 Notorious Serial Killers (2009)
The Real World of a Forensic Scientist (2009) (with Henry C Lee, Elaine M Pagliaro)
Inside the Minds of Sexual Predators (2009) (with Patrick N McGrain)
The Forensic Psychology of Criminal Minds (2010)
The Mind of a Murderer (2011)
Snap: Seizing Your Aha! Moments (2011)