Howard Duff

as O.M.

as Senator William 'Billy' Duvall

as Father Martin Finnegan

as John Shaunessy

as Dr. Jules Meecham

as Harry Regan

as Doug Jackson

as Lt. Burt Kaufman

as Dr. Crane

as Pete Menlo

as Police Sgt. Jack Farnham

as Jim Hollis

as Dr. Stephen Mitchell

as Jack Early

as Steve Quain

as Keith Ramsey

as George Morton

as George Deever

as Frank Niles

as Narrator