* The Death Collector (2005)
* The Hollow City (2006)
* Into the Blue (2008)
* The Shadow in the Glass (2009)
* The Black Stone (2011)
* Blood Oath (2012)
* City of Lies (2014)
* Empire of Night (2016)
* The Final Reckoning (2018)
Novellas:
* The House of Shadows (2010)
* The Blood Curse (2013)
* The Lost King (2015)
* The Chosen One (2017)
* The Last Hope (2019)
Short Stories:
* "The Ghost of Amsterdam" (2007)
* "The Man Who Loved Death" (2008)
* "The Woman in Black" (2009)
* "The Child of the Night" (2010)
* "The Vampire's Bride" (2011)
Non-fiction:
* The History of the Vampire: From Ancient Myths to Modern Horrors (2015)
* The Complete Dracula: A Fully Annotated Edition of Bram Stoker's Classic Novel (2017)