My Bloody Valentine is a 1981 Canadian slasher film directed by George Mihalka from a screenplay by John Beaird. It features an ensemble cast that includes Paul Kelman, Lori Hallier, and Neil Affleck. The plot tells about a group of young adults who decide to throw a Valentine's Day party, only to incur the vengeful wrath of a maniac in mining gear who begins a killing spree.