After among other things an army career, Fager made his debut as a writer in 2009 with the short story collection Swedish Cults (Svenska kulter) that received a most favourable review in Swedish newspaper Dagens Nyheter[6] and launched Fager's career as full-time writer. Fager writes modern urban horror in a style he has repeatedly described as ”what would happen if James Ellroy took on H.P. Lovecraft”. Set in present-day Sweden, his interconnected stories form a modern part of the Cthulhu mythos with entities such as Dagon, Hastur and Nyarlathotep making appearances. Fager's fictional world, known as "The Cult's World", has been made into a role playing game and a graphic novel and his stories has been worked into the Swedish edition of role playing game Call of Cthulhu. Fager has been published in Finland, Italy and France.[7]
Collected Swedish Cults (2011; Samlade svenska kulter – An omnibus featuring the short stories from Swedish Cults as well as "Interspecies Liaisons" and "You can not live")
I Saw Her Today at the Reception (2012, Jag såg henne idag i receptionen)