Married college professor Michael Lane falls in love with one of his students and hatches an elaborate scheme to dispose of his wife, Elizabeth. His murder plot goes as planned. However, he soon receives an anonymous note: "I know what you did, murderer!" Prof. Lane frantically tries to discover who knows his secret...

Genres

Cast

Patrick O'Neal

Michael Lane

Angharad Rees

Stella Mason

Michael Kitchen

George Newton

Gerald Sim

Peterson

Patricia Donahue

Elizabeth Lane