“Mandy” (0 out of four) was a mind-numbingly awful, pretentious monstrosity set for no particular reason in the year 1983 in which a mountain worker (Nicholas Cage) lives with his devoted girlfriend (Andrea Riseborough); when she is suddenly killed by a deviant children’s cult (led by Linus Roache), he gathers his chainsaw and knives and wanders the frontier embarking on spiritual and personal revenge. Almost completely incoherent movie would probably make just as much sense watching backwards but it’s also stupid and disgusting and goes on forever. What the hell drugs were the cast and crew using before filming this mess?