Teen extortionists terrorize neighbors and murder an informer; guest Edward James Olmos.
A former leader's aging gang must protect him from the vengeful brother of a man killed in a brawl.
Del hunts the church robbers who killed a priest and a parish fund-raiser.
Believing the mobster is holding Sharon, Del turns in his badge and prepares to face charges.
Del agrees to protect an old flame (Tricia O'Neil) who is about to testify against a mobster.
The brothers of a woman who committed suicide after a false diagnosis of cancer seek revenge on her physician.
A bigoted police veteran is the prime suspect in the killing of a black burglar; guest Carl Weathers.
Del runs afoul of a police chief when he and Shonski travel to Arizona to pick up a prisoner (Erik Estrada).
A paroled murderess (Mariette Hartley) frames Del, damaging his credibility as the sole witness against a paid assassin.
A bail jumper (David Wayne) plans suicide so the insurance will reimburse pal Del for his forfeited bond.
Del doubts a trucker's (Kiel Martin) guilt when another murder occurs while he is in custody.
A police captain accuses Del of sabotaging a raid on a numbers racket.
Del insists on investigating after a young man dies at a famed criminologist's home; guest George Gaynes.
Del tries to capture killers before his old buddy (Vincent Baggetta), the brother of the victim, can wreak vengeance.
The fourth victim (Ellen Geer) of a rapist/strangler survives but cannot describe her attacker.
A murder complicates Del's investigation of a rash of auto thefts; guests Phylicia Ayers-Allen, Michael Mann.
Del participates in a grueling stakeout and defends a friend in an Internal Affairs probe.
Going by the book in an arrest attempt may have caused the death of Del's temporary partner.
A police informer (Rene Auberjonois) seeking a different life asks Del to protect him.
The arrogance of a famous narcotics detective infuriates Del and endangers a homicide investigation.