THE FOUR MEN OF THE TITLE ARE BRITISH WWI VETERANS WHO DECIDE TO WORK SECRETLY AGAINST ENEMIES OF THE COUNTRY. THEY AREN'T ABOVE A BIT OF MURDER OR SABOTAGE TO SERVE THEIR ENDS, BUT THEY CONSIDER THEMSELVES TO BE TRUE PATRIOTS. STARRING FRANK LAWTON, ANNA LEE, GRIFFITH JONES, FRANCIS L. SULLIVAN, HUGH SINCLAIR.