A tawdry low budget pot boiler featuring dynamite performances by Vince Edwards and a similarly game supporting cast. I know Edwards is probably most famous for his heroic Ben Casey role, but he sure chewed up a lot of upholstery in movies like this one and MURDER BY CONTRACT the year before. A lot of the charm comes in watching this police procedural unfold. Lots of seedy low lives generally keep up the off color flavor and the suspense builds nicely over the course of time.
Some of the discussion of radioactivity is dated, but the cannister makes a great macguffin for the gruff talking' square-jawed Men of Law to pursue. It really wouldn't have taken much to raise this from a guilty pleasure and enjoyable cautionary tale to something along the lines of KISS ME DEADLY, but it's almost more quaint to see this mostly forgotten and obscure b-movie in its under-appreciated present form, if you can find it. The last shot of the movie is quite a hoot! Fine, jazzy musical score by a then-very young Jerry Goldsmith.