Walked might be underselling it.
A cop-killer and all-around nasty piece of work, the career low-life played by Richard Basehart spends his time running and skittering like a cockroach.
There’s a city-wide dragnet on for him (with one of the cops played by future Dragnet boss Jack Webb), but everyone’s most wanted is an artful dodger.
Hiding out beneath the city, then popping up to pillage and provoke, he’s a devious nogoodnik, and one who’s on top of his crime game.
Let the fog of the night wash over you, and sink into the mire as the tension ratchets up.