Macbeth (1961) [Lady Macduff]: Killed by Sean Connery's soldiers. (I haven't seen this version, but we're all familiar with the story...)
Point Blank (1967) [Lynne Walker]: Commits suicide (off-screen) by taking a drug overdose in her bedroom; her body is shown afterwards lying on the bed when Lee Marvin discovers her. (Thanks to Marc)
Happy Birthday to Me (1981) [Estelle Wainwright]: Drowned inside her car after she accidentally drives over a drawbridge into the river, after she instructs her daughter (Melissa Sue Anderson) to open the window and swim to safety. Her decomposed body (obviously a special-effects dummy) is shown afterwards when Lawrence Dane discovers all the victims arranged as "party guests." |