"In 1941, the IRA plans a campaign to coincide with the planned German invasion of England. Dermott O'Neil finds it easy to get into the IRA, but can he get out?"
Robert Mitchum
as Dermot O'Neill
Richard Harris
as Sean Reilly
Anne Heywood
as Neeve Donnelly
Dan O'Herlihy
as Don McGinnis
Cyril Cusack
as Jimmy Hannafin
Niall MacGinnis
as Ned O'Neill
Marianne Benet
as Bella O'Neill
Christopher Rhodes
as Tim Malone
Harry Brogan
as Patrick O'Neill
Eileen Crowe
as Mrs. Kathleen O'Neill
Joe Lynch
as Seamus
Marie Kean
as Mrs. Matia Devlin (the publican)
Geoffrey Golden
as Sgt. Crawley
Eddie Golden
as Johnny Corrigan (as Edward Golden)
Wilfred Downing
as Quinn
J.G. Devlin
as Const. Lauden (as James Devlin)
Hilton Edwards
as Father McCrory
Tay Garnett
Director
Raymond Stross
Producer
Arthur Roth
Novel
R. Wright Campbell
Screenplay