Sorority House Massacre is a 1986 American slasher film written and directed by Carol Frank, and starring Angela O'Neill, Wendy Martel, Pamela Ross, and Nicole Rio. It follows a sorority pledge who experiences déjà vu in the sorority house when a murderer begins killing the residents over Memorial Day weekend. It is the second film in the Massacre franchise and a spin-off set in the same realm as The Slumber Party Massacre trilogy; like its predecessor, it was entirely written and directed by a woman.

The Slumber Party Massacre is a 1982 American slasher film directed by Amy Holden Jones and written by Rita Mae Brown. It is the first installment in the Slumber Party Massacre series, and stars Michelle Michaels, Robin Stille, and Michael Villella. The film follows a high school senior who gathers her friends for a slumber party, unaware that an escaped power drill-wielding killer is loose in the neighborhood.