* _Covenant with Death_ (1989)
* _The Demonologist Handbook_ (1989)
* _The Resurrection Man_ (1989)
* _The Tomb_ (1989)
* _The Prophecy of the Spider_ (1991)
* _The Fourth Revelation_ (1992)
* _Hell House_ (1993)
* _Nightcrawler_ (1994)
* _Scavengers_ (1995)
* _Deadwater_ (1996)
* _Shadow of the Demon_ (1997)
* _The Haunting of Ravenmount Hall_ (1998)
* _The Devil's Playground_ (1999)
* _The Gates of Hell_ (2000)
* _The Armageddon Game_ (2001)
* _The End of the World_ (2003)
* _The Last Prophecy_ (2004)
* _The Demon War_ (2005)
* _The Apocalypse Virus_ (2006)
* _The Final Reckoning_ (2007)
* _The Dark Tide_ (2008)
* _The Shadow Lord_ (2009)
* _The Night of the Living Dead_ (2010)
* _The Return of the Living Dead_ (2011)
* _The Dawn of the Living Dead_ (2012)
* _The Undead_ (2013)
* _The Apocalypse_ (2014)
* _The Armageddon_ (2015)
* _The Rapture_ (2016)
Μη μυθοπλασία:
* _The Complete Idiot's Guide to Astrology_ (1998)
* _The Complete Idiot's Guide to Numerology_ (1999)
* _The Complete Idiot's Guide to Tarot Cards_ (2000)
* _The Complete Idiot's Guide to Palmistry_ (2001)
* _The Complete Idiot's Guide to Dreams_ (2002)
* _The Complete Idiot's Guide to Past Lives_ (2003)
* _The Complete Idiot's Guide to the I Ching_ (2004)
* _The Complete Idiot's Guide to Feng Shui_ (2005)
* _The Complete Idiot's Guide to Yoga_ (2006)
* _The Complete Idiot's Guide to Meditation_ (2007)
* _The Complete Idiot's Guide to Buddhism_ (2008)
* _The Complete Idiot's Guide to Christianity_ (2009)
* _The Complete Idiot's Guide to Islam_ (2010)
* _The Complete Idiot's Guide to Judaism_ (2011)
* _The Complete Idiot's Guide to Hinduism_ (2012)
* _The Complete Idiot's Guide to Taoism_ (2013)
* _The Complete Idiot's Guide to Confucianism_ (2014)
* _The Complete Idiot's Guide to Shintoism_ (2015)
* _The Complete Idiot's Guide to Wicca_ (2016)