British horror following a pair of hitmen who encounter trouble when sent to dispatch a dabbler in the dark arts. Pinner (Billy Clarke) is an experienced assassin in the employ of Bruno (Harry Miller), a mob boss who has fallen out with his former partner, Kist (Jonathan Hansler), and decides that Pinner is the best man to resolve the issue. He duly sends Pinner and the novice hitman, Cully (Jack Gordon), to murder Kist. The duo break into their victim's house and await his return from the opera. However, they are disturbed when they discover the human and animal remains of what appear to be sacrifices or an attempt at sorcery and contact Bruno for further information. Bruno confirms that Kist is a dabbler in black magic but insists that the duo stay and finish the task they have been allocated. Will some surprises lie in store for them?