Special Guest Stars Susan Oliver as Karen Macklin Guest Stars Ross Martin as Maxwell Imry Scott Marlowe as Vincent Talbot Co Starring John Carter as Lt. John Biddle Charles Isen as Dr. Mayhill Gail Strickland as Susan Taylor Peter Brocco as Harry Hamlin Fred Sadoff as Jerry Mark Allen as Highland Supervisor Walker Edmiston as Man Selling Keys Artie Spain as Hobo