* The Wolf's Tooth (2009)
* The Raven's Shadow (2011)
* The Serpent's Embrace (2013)
* The Dragon's Fire (2015)
* Enhjørningens horn (2017)
* The Griffin's Claw (2019)
* The Phoenix's Feather (2021)
sakprosa
* Vampires:A History (2008)
* Werewolves:A History (2010)
* Zombies:A History (2012)
* Ghosts:A History (2014)
* Witches:A History (2016)
* Aliens:A History (2018)
* Dragons:A History (2020)