Patricia Windsor's 1991 novel The Christmas Killer centers on a small Connecticut town where a serial killer, one who uses poinsettias as a calling card, leaves a wake of dead bodies during the holidays. And the only person standing in his way is a psychic teenager.
Kim Chapiron's Sheitan is an amusing as well as disturbing French offering of Christmas horror that stars Vincent Cassel in a memorable role.
The Caller may not have any phone games between the two characters, but this '80s horror is a hidden gem waiting to be discovered.
My additional thoughts on the most disturbing Tales of the Unexpected episode, The Flypaper.
Bryan Bertino's second movie after The Strangers is an underrated delivery of POV terror.
Tales from the Paulside 