Gritty + Tough
Very noirish !
The b\w is effective and fine acting from Spillane,himself.
Music fits and there are some particularly nasty scenes which may border on the gratuitous.
You got the veteran Lloyd Nolan and a stunning femme fatale,Shirley Eaton(Goldfinger,anyone ?).
Nothing glamorous here but the seamy\steamy side of the city and those who peddle influence and power.
...surprisingly,a very modern tale of crime emanating from 1963(includes Johnny Cool as well).
The anti-hero still thrives nicely today,thanks in large part to guys as Mickey Spillane....