He Knows You're Alone (1980)

A bride-to-be is stalked by a deranged killer on the night before her wedding in He Knows You're Alone (1980). Amy Jensen (Caitlin O'Heaney) is having a terrible case of the pre-wedding jitters, but not because she's afraid of commitment. She's afraid of the serial killer who has been stalking and killing brides on the day of their weddings! Luckily police detective Len Gamble (Lewis Arlt), whose fiancee suffered a similar fate years before, is here to help, as is Marvin (Don Scardino), Amy's creepy ex who works at the morgue. As long as you're alone, take a moment to admire solidly-built blonde Elizabeth Kemp, who bares her soapy suck sacks in the shower. They should've called it He's Growing a Bone!