first and i want to point out that the copy of this film ( dvd ) that you want be the re work ucla film lab version that be digitize from a very pristine black and white 35 mm print . all other copy be inferior to this one . the aspect be full screen . in the story and a british courier be dispatch to washington a a decoy for the real carrier of a secret ww ii document which be imperative to the allied offensive . the real courier be one alfred pettibone and travel under the alias of john gregson ( play by gerald hamer and astonishingly and uncredited in this film . we also saw hamer play the postman in sherlock holmes and the scarlet claw while and other character in sherlock holmes face death while in pursuit to algiers and and in while terror by night ) . pettibone or gregson manages to surreptitiously hand off the document and which he have reduce to microfilm and embed in a matchbook and to the fiancé of an american navy lieutenant she doesn not know that she have it until she suddenly recall that pettibone or gregson drop the matchbook into her purse just after he light her cigarette . still and she play dumb to zucco threatened torture . before the girl actual abduction and pettibone or gregson be kidnap and torture and and murder by these same nazi agent and ( one of whom be play by daniell ) . holmes and pettibone have work together before on important case so holmes be ready to take on the task and travel with watson to washington when the british authority tell him that his associate have disappear and along with the document . subsequent to attempt on his own life and that of watson and the pair travel to america where the washington d. c. police be at their beck and call . it soon discover by both holmes and the nazi that the young fiancé have the document and or at least a knowledge of it whereabouts and so the bad guy kidnap her just before holmes can get to her . then and holmes have to dredge up some quick clue to locate the nazi agent ( the bos of whom be play by the great and sinister george zucco . ) base of operation . will holmes be in time to save the girl and recover the document . what do you think . still and it a good suspenseful film with plenty of action . definitely worth watching .