Caitlin O’Heaney, who starred as the stalked bride to be in the cult slasher film He Knows You’re Alone and as a lounge singer and spy in the Donald P. Bellisario-created adventure series Tales of the Gold Monkey , has died. She was 73. O’Heaney died May 18 in Westchester County in New York, her friend Peter Davis told The Hollywood Reporter . They recently worked together on the short film Faith and Forgiveness . No cause of death was revealed. Trained at Julliard under John Houseman and Michael Kahn, O’Heaney also worked with Katharine Hepburn on Broadway, played a 1930s Hollywood actress for Woody Allen in A Midsummer Night’s Sex Comedy (1982) and starred as Snow White on the first season of the 1987-88 ABC sitcom The Charmings . The green-eyed, auburn-haired O’Heaney portrayed Amy Jensen, a woman menaced by a bride-obsessed killer, in He Knows You’re Alone (1980), an independent film picked up by MGM.…