An FBI agent goes undercover to investigate the sabotage of American cargo ships.
Hugo Stregel
Mitchell (uncredited)
FBI Chemist (uncredited)
Vic, Stregel's Thug (uncredited)
Pelly, Stregel's Henchman (uncredited)
Gruning, Stregel's Henchman (uncredited)
Joseph Cummins
FBI Director Sinclair
Rucca
