April Fool's Day

“Guess who's going to be the life of the party?”

A ferry carries a group of college friends to an island mansion for April Fool's Day weekend, one last party before graduation. Their host is Muffy St. John (Deborah Foreman), and Kit Graham (Amy Steel) is among the guests, with Fred Walton directing. Once they are cut off from the mainland and an unseen killer starts picking them off, the film is about how fast a friendship turns to suspicion when nobody can be sure who is joking.