Black Hand plot
"It's Gene Kelly against The Black Hand!"
Johnny Columbo arrives in New York, where he wants to avenge the death of his father who was murdered by the mob gang Black Hand. Together with the Italian police officer Louis Lorelli, he sets up a vigilante to resist the increasingly harsh actions of the gang, but already at the first meeting Johnny is captured and half beaten to death. He doesn't give up, however, and when Louis sees an opportunity to sue gang member George Alani after a bombing, it starts to look like his revenge will be sweet.