Vintage paperback edition of My Gun is Quick, by Mickey Spillane (Signet, 1951; 11th printing). The second of Spillane's novel featuring the tough-guy detective Mike Hammer, this novel finds Hammer investigating the death of a red-headed prostitute, only to uncover a massive prostitution ring operating in New York City. This book was the inspiration for the 1957 film by the same name, though the film swerves into a storyline concerning a cache of jewels stolen by the Nazis in WWII. 

This book is in very good condition, with two small (0.25") tears on the spine but no other major signs of wear.