“I Know What You Did Last Christmas“ (* out of four) was an inept timewaster about a group of friends (Lauren Staerck, ShaylI Reagan, Connor Horrigan, and others) who reunite at a Christmas party and find they are all targeted due to a prank from a year earlier in which someone was killed. Completely bereft of any scares or thrills and doesn’t even have any good gory kills to recommend it. Obviously inspired by “I Know What You Did Last Summer” (if you couldn’t guess) but this makes that look like Oscar material by comparison.