This has many of the elements of a typical gangster film, drugs and organised crime but differs in that the hero is an ex marine, though this is not a war film. He joins the marines to escape his family's involvement with organised crime but does something stupid which gives the FBI (or one of those law enforcement agencies) leverage to get him to work undercover for them. What he did didn't seem in character and didn't seem to explain why he was forced to go rogue, but if you accept that they have a hold over him then the rest of the film is enjoyable enough. Plenty of action and some rough justice are handed out. Of course they try and shaft him into working permanently for them but he has other ideas. The title is explained at the end of the film. A street corner is significant to him which is the corner of 10th and Wolf Street,