From a strictly professional standpoint, this is the best movie ever made by Sergiu Nicolaescu. It's done with a pretty good narrative feeling, a clever insight in shooting the action scenes, and even a certain sense of building the characters - who, although as sketchy and shallow as in most of the Nicolaescu movies, were able yet to seduce the young and naive audience of the early seventies.
The big problem remains the typical one for that epoch: political hypocrisy. The so-called "hero", a communist veteran who is appointed a police commissioner (Mihai Roman, played by Ilarion Ciobanu), is positively angelic: intelligent, wise, honest, resourceful, generous, kind and good-hearted. Of course, he MUST confront his old tormentor, commissioner Stefan Patulea (Alexandru Dobrescu), who beat the crap out of him years ago, when he was just a poor innocent subversive agent, nicely and heroically conspiring to deliver his motherland to the soviets - and now, of course, Patulea MUST be still an asshole, bent to get rid of the valiant communist (who, koochy-koo, doesn't have the least suspicion!) Fortunately, the one to save the day is the courageous, manly, gritty, trigger-quick, silver-armor knight Tudor Miclovan (Sergiu Nicolaescu), about whom the communist leader Nicolae (Emanoil Petrut) explicitly states: "He says he's apolitical, but in truth he's one of ours..." This kind of tricks were used in those years to coat the toxic pills of communist ideology in the sweet couch of thrills and adventure. Definitely, it's Nicolaescu main asset - to always be both with the devil, and with the candle (as an old Romanian saying goes...)