A flute-playing "Pied Piper" (played by Ricky Nelson) talks teenage girls into prostitution, then disposes of them when they are no longer convenient. Stone's daughter helps him break up this murderous prostitution ring.

An undercover cop is murdered with Stone's gun, and a hotshot young inspector seems determined to pin the rap on Stone.

While investigating a lead, Steve is run over by a car and rendered a vegetable. Mike insists on taking revenge, and is demoted to walking a beat.

A rapist targets Stone's daughter and her friend; a radical feminist organization encourages them to take matters into their own hands.

After Stone is hit by a van and suffers an inner ear injury, he considers changing to a desk job. Meanwhile, the vengeful wife of a man he killed stalks and tries to kill him in his half-deaf state.

Lieutenant Stone is placed in the awkward position of investigating a burglary with Irene Martin, a lady cop -- who is also his girlfriend who he's just proposed to. She resents his intrusion into 'her' case and their relationship unravels.

Stone searches for a fugitive, and is dogged by the fugitive's innocent and naive daughter.

Misguided radicals take a jury hostage in a case where corrupt "movement leaders" are being tried for murder.

Mike and Inspector Dan Robbins make a last-ditch effort to save the jury from execution at the hands of the radicals.

Inpector Stone and Robbins go after a gang of thieves who use motor cycles to make their get away.