Unbearably scary in spots, WHEN A STRANGER CALLS begins with a sequence that will test anyone's threshold for fright. A baby sitter, Jill (Kane), gets a creepy phone call from an unknown man who asks, "Have you checked the children?" Jill thinks the call a prank and hangs up, but when the
caller persists, she telephones the police, who offer to put out a tracer. After another phone call, the police contact Jill and tell her that the calls are coming from inside the house. To her horror the kids have been slaughtered by a crazed merchant marine (Beckley), who is captured by
detective John Clifford (Durning) before he can kill Jill. Seven years later the killer esca...