Overview
Don't Open Till Christmas is a 1984 British slasher film directed by Edmund Purdom, and starring Purdom, Alan Lake, Belinda Mayne, and Gerry Sundquist. Written by Derek Ford and Alan Birkinshaw, the film follows a mysterious killer murdering Santa Claus impersonators in London during Christmastime.
Plot
A man in a Santa suit and a woman meet in an alleyway to have sex in a car, and are stabbed to death by a man wearing a grinning translucent mask. During a party, another man dressed like Santa Claus has a spear thrown through his head, and dies in front of his daughter, Kate Brioski. At New Scotland Yard, Chief Inspector Ian Harris and Detective Sergeant Powell discuss the murders, and interview Kate, and her boyfriend Cliff. That night, another Santa is killed, having his face shoved onto the grill on which he was roasting chestnuts on an open fire.
The next day, a present (which reads "Don't Open Till Christmas") is delivered to Harris, Powell receives a strange call from a man claiming to be a reporter named Giles, and a Santa is shot in the mouth. Cliff tricks Kate into visiting a porn studio owned by an old friend, and after Kate storms off, Cliff and the model (who is adorned in a Santa cloak) prepare for outdoor photographs, but Cliff runs off when a pair of police officers spot them, and the model encounters the killer, who lets her go.
At a peep show, a Santa is knifed, which is witnessed by one of the strippers, Sherry Graham. Harris visits Kate and Cliff, and makes it clear that Cliff is a suspect in the attacks, due to being present for two of them. Powell finds Giles digging through his office, and tells him that the newspaper Giles stated he worked for claimed not to know him. Giles retorts by suggesting that Harris is hiding something, and that Powell should keep an eye on him. A Santa is assaulted by a group of teenagers, and runs into the London Dungeon, where he and an employee are killed.
From Wikipedia (CC BY-SA 4.0).