This is a fairly standard B-movie noir starring James Cagney as a man from the "Bureau of Weights & Measures" who chooses to fight against extortion and corruption. The story unfolds with familiar elements: threats, attempts to set him up, all while he protests what he sees as a corrupt system overseen by an untrustworthy city councillor (Robert Gleckler). It doesn't offer anything particularly remarkable—essentially a showcase for Cagney, providing just enough material to last about an hour and leading to a predictable ending. The film moves at a brisk pace thanks to the dialogue, though it feels somewhat crowded. It’s not among Cagney's finest performances, but it also isn't one of his least impressive.

Source on TMDB