Beverly Hills 90210 takes on Halloween in 1991's season two episode, which ends up taking a dark turn. When the group attends a costume party at an old mansion, Kelly shows up dressed as a witch, and her revealing costume attracts the unwanted advances of some creep dressed as a cowboy. He gets her alone in an upstairs bedroom, and despite her protests, aggressively forces her onto the bed. Although it doesn't go any further thanks to Brenda and Donna interrupting, just thinking about it still leaves us shaken.