Richard Burton as John Morlar

Lino Ventura as Brunel

Lee Remick as Doctor Zonfeld

Harry Andrews as Assistant Commissioner

Alan Badel as Barrister

Marie-Christine Barrault as Patricia

Jeremy Brett as Edward Parrish

Michael Hordern as Atropos - Fortune Teller

Gordon Jackson as Doctor Johnson

Michael Byrne as Duff

Derek Jacobi as Townley - Publisher

Malcolm Tierney as Deacon

Philip Stone as Dean

Robert Lang as Pennington

Avril Elgar as Mrs. Pennington

James Hazeldine as Lovelass

John Normington as Mr. Copley

Robert Flemyng as Judge McKinley

Norman Bird as Major Henry Morlar

Jennifer Jayne as Mrs. Morlar

Frances Tomelty as Nanny

George Innes as Van Driver

Ian Marter as Detective

Brook Williams as Male Nurse

Wendy Gifford as Receptionist

Shaw Taylor as TV Space Reporter

Gordon Honeycombe as TV Newscaster

Mark Jones as Sgt. Hughes

Maurice O'Connell as Sgt. Robbins

Victor Winding as Senior Police Officer

Anthony Blackett as Mounted Police Officer

Denyse Alexander as Hospital Doctor

John Flanagan as Police Constable

Stanley Lebor as Police Doctor

Cornelius Bowe as Young Morlar

Adam Bridges as 10-Year-Old Morlar

Joseph Clark as 14-Year-Old Morlar

Earl Rhodes as Parsons

Christopher Burgess as Pilot

Matthew Long as Co-Pilot

Colin Rix as Engineer

Malcolm Brownjohn as Man in Court Scene (uncredited)

Jeremy Coote as Policeman at Cathedral (uncredited)

Marc Furstenberg as Policeman (uncredited)

Clifford Harker as Organist (uncredited)

Guy Standeven as Teacher (uncredited)