Robert Taylor toughened up his image considerably with this gangster movie, which was unusual both in its plot and origins, having come from MGM, which was generally not known for its crime movies. Taylor plays a parolee who is pretending to follow the straight-and-narrow as a hardworking cabbie, but is really the mastermind behind a dog-racing track being built with mob money. Eager works every angle, has a gang that's generally in line, and also has a loyal right-hand man in Jeff Hartnett (Van Heflin, who won an Oscar), his educated assistant, who drinks too much and waxes poetic when he isn't looking after Johnny's interests (and sometimes when he is, too). Eager has only one problem, special prosecutor John Benson Farrell (Edward Arnold) -- who was also the attorney instrumental in sending Eager up -- who has gotten an injunction against the track's opening. But the hood sees an opening when he accidentally crosses paths with a young sociology student, Lisbeth Bard (Lana Turner), who is drawn to him romantically, and then finds out that she's Farrell's step-daughter. After romancing her for a few months, he sets her up in a scam, making her believe that she killed one of Eager's men (Paul Stewart). He "generously" gets her away from the scene and then informs Farrell of what has happened, pointing out that he holds the evidence against Lisbeth. Farrell has no choice but to withdraw the injunction, and the track opens, but problems ensue when rival mobsters decide to try and cut in on Eager and his racket, and he finds out that Lisbeth is so guilt-ridden over her "crime," that she's destroying herself mentally. Eager can't figure out why she feels the way she does or what to do about it, or even if he should do anything to help her, but with Jeff's help, he discovers a nobler side to his nature. Realizing that she really does love him, and knowing it's not possible for the two of them to be together, he goes out in a blaze of glory -- laced with a special irony built into the plot -- solving Lisbeth's problem and also curing her of her love for him, and settling a score or two in the process.
