Geoffrey Peace

Richard Johnson

Julie Chambois

Honor Blackman

Patrol Boat Lieutenant

James Falkland

Harry Riker

Jeremy Kemp

Johann

Peter Vaughan

David Garland

Roy Dotrice

Flag Officer

Kenneth Cope

Patrol Boat Commander

Guy Doleman

Inspector Seekert

Jack May

Elton

Tony Caunter

Admiral Tringham

Clifford Evans

Screenplay

Marvin H. Albert

Director

Don Chaffey

Production Secretary

Vicki Deason

Novel

Geoffrey Jenkins