The second of two British b-crimes pairing lantern-jawed Patrick Allen, honing one of the greatest voices in cinema history, with ingenue Jacqueline Ellis, THE TRAITORS... written by Jim O'Connelly who'd direct Ellis in THE HI-JACKERS the next year... follows the usual spy template popular in the 1960's...
Herein the titular gang of microfilm-carrying turncoats are shadowed by stalwart British agent Allen paired with an American with a British accent in future OTLEY actor James Maxwell...
Allen is married while Maxwell, single, takes Jacqueline Ellis's Mary, as a female agent, on a date, which, sadly, is about the only real screen-time she has, buried by Allen's troubled wife Zena Walker while the action and espionage, with an extremely meager budget, isn't very suspenseful...
The poster has a petrified dame with her mouth covered as Allen's getting pistol-whipped, and neither occurs in this average post-noir that's still an entertaining time-filler, economically filling its sixty-minute programmer's length.