Michael Moriarty as Keith Mannings / Craig Mannings

Penelope Milford as Julie Warren

Geraldine Fitzgerald as Mrs. Thomason

Cameron Mitchell as Bud Waldo

Sarah Langenfeld as Christine Waldo

Martha Smith as Hedwig

Virginia McKenna as Woman in Ballroom

Reinhold Olszewski as Inspector Hessinger

Henriette Gonnermann as Woman Tourist

Vonne Sherman as Millie

Peter Mannering as Bill

Yael Forti as Woman of Bell Tower

Alex Diakun as Mr. Adams

Peter Schlesinger as Stocky Man

Shaun Lawton as Man with Cigar

Max Buchsbaum as Promoter

Georg Tryphon as Waiter

Reece Hasanen as Young Keith

Troy Hasanen as Young Craig

Wendy Merk as Nurse