Sophia Loren as Jennifer Rispoli Chamberlain

Richard Harris as Dr. Jonathan Chamberlain

Martin Sheen as Robby Navarro

O. J. Simpson as Haley

Ava Gardner as Nicole Dressler

Burt Lancaster as Col. Stephen Mackenzie

Lionel Stander as Max, the Train Conductor

Ann Turkel as Susan

Ingrid Thulin as Dr. Elena Stradner

Lee Strasberg as Herman Kaplan

Lou Castel as Swedish Terrorist

John Phillip Law as Major Stark

Ray Lovelock as Tom

Alida Valli as Mrs. Chadwick

Stefano Patrizi as Terrorist

Thomas Hunter as Captain Scott

Angela Goodwin as Nun

Carlo De Mejo as Faux Patient

John P. Dulaney as Harmonica Player

Fausta Avelli as Sweets