an impressive cast represent james mason and michael wilding and stewart granger and karel stepanek and inter alia . and that about it for the good part . even the cast can not lift this wartime espionage thriller above the routine . james mason be a splendid actor but should have stay away from any role call for a foreign accent . in the desert rat he mangled german . here he do to a french accent what the luftwaffe do to stalingrad . michael wilding sound positively uncomfortable with his work class london locution . karel stepanek and who make virtually a career out of play nazis and at least sound right but the role seem to have come by way of a cookie cutter . what a stereotype . i can not blame the writer too much and though this be write in 1942 and a bad year for the ally . let say this be an historical curiosity . the future hold good thing for most of the people involve in this low budget thriller .