Paul Burke as Jerry Marshall

Carol Lynley as Diana

Martha Hyer as Lee Marshall

Peter Lind Hayes as Pete Delaney

Philip Carey as Mike Wilson

Stephen McNally as Lt. Tom Gavin

Whit Bissell as Dr. David Haggis

Ann Doran as Lee's Mother

Kathryn Givney as Margaret Granger, Diana's Aunt

Orville Sherman as Raymond

Leoda Richards as Patron in Country Club Bar

Elaine Devry as Sharon Livingston

Charles Alvin Bell as Swanton