My Bloody Valentine (1981)
In mid-1980, the slasher subgenre was in full swing, and it came equipped with a handful of motifs: each new entry featured a silent serial killer whose identity was shielded by a mask, they wielded a bladed weapon, targeted their victims over the course of a holiday, and did so typically at a party at which an abundance of sexually active, hard-drinking teenagers gathered at once like moths drawn to light. The movie that popularized these tropes, minus the party aspect, was John Carpenter and Debra Hill's Halloween in 1978, in which a 21-year-old mental patient escapes from an asylum to which he was committed at the age of six for the murder of his older sister on Halloween night and returns to his hometown on the 15th anniversary to stalk and murder a group of teenage babysitters. Two years later, writer Victor Miller and director Sean Cunningham adopted the most integral ingredients of Halloween 's critical and commercial success while upping the ante for Friday the 13th vi...