John Sinclair is the name as well as the protagonist of a popular German horror detective fiction series (of the pulp fiction or penny dreadful variety). Sinclair, a Scotland Yard chief inspector, battles all kinds of undead and demonic creatures. The series appears weekly and has been running since 1973. The full title is Geisterjäger John Sinclair, (lit. Ghost Hunter John Sinclair), though the official English title is John Sinclair: Demon Hunter. While falling into the category of 'pulp fiction', the ongoing series is yet remarkable for the relatively wide range of its vocabulary and the inventiveness of its plots.