After being charged with the murder of a scientist, a young doctor must track down a Nazi spy ring to clear his name.
The innovative direction of Robert Siodmak lifts the inexpensive imitation-Hitchcock Fly By Night well above the ordinary. Richard Carlson plays young intern Jeff Burton, who impulsively offers a lift to an odd-looking gentlemen (Miles Mander). It soon turns out that Jeff's passenger is an inventor has just escaped from a shady sanitarium, where he has been held prisoner by Nazi spies.
