Danny O'Brien is back in action fighting the notorious Simon Moon, also known as The Terror. Three years earlier O'Brien had single-handedly captured The Terror and was called Hero by the people of L.A. Now Simon has escaped and has started killing women again, and O'Brien is the only man who can stop him.

A journalist gets pulled into an intrigue by his editor that involves a story that he received a Pulitzer for years before. It seems that the second largest diamond ever mined was used during World War II to buy a Jewish woman freedom from a prison camp. Only trouble is it disappeared after the war and now everyone is after it, including the Russians, former Nazis, gangsters, and the original owner. Somehow, the story that the journalist originally wrote about a camp survivor is believed to have leads to the diamond.

When a law student accidentally kills the son of a mob boss in a fight, he finds himself relentlessly pursued by the mob and the police.

Detective Tony Church is forced to retire and become a store rent-a-cop when his drug sting operation comes to a tragic end by a masked killer. He joins forces with a prostitute, the only one able to identify the killer, to bring him to justice.