The Diogenes Club series, by British horror author Kim Newman, is a series of short stories featuring the supernatural adventures of the titular club, a secret wing of the British government established to deal with extraordinary threats to the realm.
The Diogenes Club stories have been collected into three core volumes: The Man From The Diogenes Club,The Secret Files of the Diogenes Club, and Mysteries of the Diogenes Club. In addition to these, Diogenes Club stories have appeared in other Newman anthologies, most notably Seven Stars, and Dead Travel Fast.
The Diogenes Club originates in the Sherlock Holmes story "The Adventure of the Greek Interpreter", in which it is ostensibly a gentleman’s club; however, in Newman's stories it is implied that in reality it is a top secret element of the British Secret Service. Newman's stories take this implication as their premise, interweaving several generations of fictional characters and their supernatural adventures into real world events, allowing them to encounter a wide variety of historical characters, from Aleister Crowley to Margaret Thatcher. They also interact with elements from other fictional settings; for example, in "Seven Stars", the Diogenes Club encounters the Jewel of Seven Stars, which originates in the Bram Stoker novel of the same name.
Several of the Diogenes Club characters, as well as the club itself, appear in Newman's Anno Dracula novels, however these are different versions of the same characters living in a very different world, one overrun with vampires since Dracula's conquest of Great Britain.
Published in 2006, this collection deals with the Club's exploits during the 1960s and 1970s, with the exception of "Swellhead", which is set in the modern day. The stories in this collection focus on 'Most Valued Member' Richard Jeperson, who is notable for his flamboyant dress sense and sensitivity to psychic and paranormal phenomena, a homage to various television characters from the Seventies, in particular Jason King (of Department S and Jason King), John Steed and the Third Doctor. Also featured are Jeperson's associates Vanessa and Fred Regent.