“Santa Isn’t Real” (*1/2 out of four) was a humbug horror thriller about a young woman (Kaya Coleman) who survives a brutal attack on Christmas Eve from Santa Claus; upon coming out of her coma, she tries to convince her friends (Scarlett Sperdeto, Trey Anderson, and others) about what happened and stop Santa Claus before he comes back and tries to make it their final Christmas ever. Exploitative movie tries to juxtapose elements of psychodrama and PTSD into its slasher story but it winds up a real lump of coal. Striking cinematography from Sean Conley and Coleman’s strong performance are film’s few assets.