* The Book of Skulls (2002)
* The Hallows (2003)
* Hexus (2004)
* Infernal (2005)
* The Lock (2006)
* Maleficium (2007)
* Nocturne (2008)
* Phantasm (2009)
* Requiem (2010)
* Sanctum (2011)
* Tenebrae (2012)
* Veritas (2013)
* Xibalba (2014)
* Zodiac (2015)
* Apocalypse (2016)
* Armageddon (2017)
* Doomsday (2018)
Non-Fiction
* The World of Jonathan L. Howard: Book One (2012)
* The World of Jonathan L. Howard: Book Two (2013)
* The World of Jonathan L. Howard: Book Three (2014)
* The World of Jonathan L. Howard: Book Four (2015)
* The World of Jonathan L. Howard: Book Five (2016)
* The World of Jonathan L. Howard: Book Six (2017)
* The World of Jonathan L. Howard: Book Seven (2018)
* The World of Jonathan L. Howard: Book Eight (2019)
* The World of Jonathan L. Howard: Book Nine (2020)
* The World of Jonathan L. Howard: Book Ten (2021)