This contrived programmer takes place in the boxing ring, despite its title. Eddie Nugent plays a boxer who serves three years of a five-year sentence for killing another fighter in the ring. Then, while making his comeback, he apparently deals another fighter a mortal blow. It turns out
that a gambling ring has been murdering the fighters by applying a drug to their backs via their towels. Nugent figures out the scheme when his dog starts chewing on a towel, and when the gamblers try it on him, he fakes death, then puts the police on their trail.