Chase infiltrates a bookie operation, while Officers Rice and Wilson collect on a wager that puts the gamblers out of business for good.
Chase poses as the bodyguard to an undercover figure (James McEachin) while his unit flushes out the leader of a bootleg liquor operation.
A psychologist (Robert Reed) uses taped sessions with a former jewel thief as a guide to his own series of robberies.
MacCray poses as a branding expert to link cattle rustlers with a steady supply of red meat on the black market.
The Chase unit must provide protection for an elusive foreign dignitary (Henry Darrow) who is unaware an assassin has been sent to kill him.
Chase and MacCray go undercover to investigate criminal connections after a pro football player is beaten up while leaving the stadium.
Pursuit of a heroin-laden helicopter leads the Chase unit to a narcotics ring run by a disc jockey (Mel Torme); guest Pat Harrington.
A robbery suspect escapes with police funds after double-crossing the unit's attempt to nab a crooked lawyer.
McCray goes undercover to uncover the mastermind (Steve Kanaly) behind a series of diamond heists troubling a jewelry importing firm.
MacCray poses as a millionaire playboy to trap a slick con artist (Cesar Romero) out to bribe a bogus government official.
The attention of a crime boss' daughter complicates MacCray's attempt to catch a syndicate leader using a garbage removal firm as a cover.
The Chase unit stages the shooting of an officer in an attempt to trick a motorcycle ring of small-time thieves into making a drug purchase.
The Chase unit's Norm Hamilton assumes the guise of an unlucky horse bettor in order to infiltrate a loan-sharking operation.
Officers go undercover at a movie studio to track down thieves who steal unreleased movie scripts as a guide for real-life crimes.
The Chase unit appears to be corrupt when MacCray holds back several kilos from a cocaine arrest to catch the head of a drug ring.
The Chase unit goes undercover when big winners at a local race track are robbed by thieves waiting to ambush them at their homes.
The kidnapping of his wife and daughter results in a banker's (Tim O'Connor) unauthorized use of funds as a diversion for an actual robbery.