Christopher Lee as Lord George Jeffreys

Maria Schell as Mother Rosa

Leo Genn as Lord Wessex

Hans Hass Jr. as Harry Selton

Maria Rohm as Mary Gray

Margaret Lee as Alicia Gray

Pietro Martellanza as Barnaby (as Peter Martell)

Howard Vernon as Jack Ketch

Milo Quesada as Satchel

Werner Abrolat as Inquisitor Matt (uncredited)

Diana Lorys as Sally Gaunt (uncredited)

José Martínez Blanco as Steven Truro (uncredited)

José María Prada as Palafox (uncredited)

Vicente Roca as Chief Prosecutor (uncredited)