Synopsis by Hal Erickson
Veteran serial director George B. Seitz keeps things perpetually on the move in The Great Mail Robbery. Theodore von Eltz stars as Marine lieutenant Donald Macready, assigned by his commanding officer to squelch a train-robbery gang. Going undercover, Macready infiltrates the gang and monitors their every move. When the crooks plan their biggest heist, Our Hero radios the information to his superiors. A huge counter-offensive is mounted, but will Macready be able to avoid being killed by his "pals," who now know his true identity?
aerial, bomb, gangster, help, mail, Marines, radio, robbery, train [locomotive], weapons