John Sinclair is a german Pulp Horror series by author Jason Dark. As a key member of the paranormal investigation unit of Scotland Yard he fights vampires, werewolves, ghosts and demonic entities in general. His adventures started on Juli 13th, 1973 in the pages of "Gespenster-Krimi" with the story "Die Nacht des Hexers" (Night of the Warlock). 1978 his adventures were continued in his own series called "John Sinclair - Geisterjaeger". It has since been the most successful German Horror series with over 2000 issues released, multiple Radio Dramas in different editions and a TV series.