Barnaby's cousin (Mark Shera) comes to California to solve the murder of his father, a Chicago police officer.
A reporter (John Rubenstein) has a clue to the murder of a state official who uncovered a land-development scam.
The death of a pilot leads Barnaby to a money-laundering operation in the Bahamas.
Scuba divers hire Barnaby to investigate the death of a diver seeking a Spanish galleon.
A released convict (Gary Lockwood) tries to obtain a ransom by renewing an old kidnapping scheme.
A CB-radio conversation provides a clue to finding a ranch employee who spotted a break in the fence.
After a mental patient drowns, Barnaby learns that the doctor and judge who committed her have been slain.
Barnaby's attempts to clear a prison trustee of murder uncover clues to a long-missing $500,000.
Barnaby's search for a 6-year-old boy uncovers the father's (Don Johnson) involvement in weapons hijacking.
A playboy (Bradford Dillman) aims to steal plans of a security system guarding $2 million in diamonds.
A nun is suspected of disconnecting the life support of her dying sister, a prostitute.
Barnaby suspects a husband murdered his rich wife, the cousin of Betty's playboy beau (David Hedison).
Barnaby connects a billionaire's death to the suicide of a businesswoman who was once the man's secretary.
A middle-aged sheriff suspects his young wife's philandering is linked to ritual murders.
A Vietnam veteran's best friend kills, then convinces the disturbed soldier that he did it.
A husband admits in group therapy to wanting to kill his wife, then finds her dead.
Barnaby and J.R. link singing sisters to murders, then discover they have assumed new identities.
Barnaby tries to keep a frightened witness alive after a murder attempt; guest Tovah Feldshuh.
Claiming one of the robbers raped her, a woman refuses to report a burglary.
Police learn that a college teacher, a supposed suicide, was living under an assumed identity.
Barnaby thinks he has caught the killer who sent Betty a valentine, until the man calls her.
A mechanic who vanished the eve of his wedding was a friend of two devious sisters; guest Cassie Yates.
The inside man in an armored-car heist becomes a hero after killing a two-timing confederate.
A father learns the charter boat piloted by his missing son may have carried drugs.