Million of dollars in bonds hidden by their home's previous owner makes the Harts the target of a greedy stockbroker.
Jennifer is the only obstacle to community theater director's plans to make the work of a murdered playwright his own.
Jennifer cannot convince anyone that she witnessed a murder during a brief hospital stay.
After agreeing to model for a high fashion magazine, Jennifer becomes a deranged killer's next target.
Jonathan fakes his own murder in order to find out who has been trying to kill him.
The Harts and Max go undercover on a gambling cruise to expose a counterfeiting ring.
The theft of a seemingly innocuous barbell leads Jonathan to a legendary gold thief.
Posing as Jonathan, a murderer takes refuge in the Hart mansion as he searches for the incriminating evidence that could send him to prison for life.
At their ranch, the Harts stumble onto a plan to make local ranchers believe their land is being contaminated by a chemical company's toxic waste.
In order to protect a illegal card game, a Hart Industries employee is framed for murder.
The Hart's discover that a Valentine's Day gift to some friends is being used to transport secrets by an international spy ring.
Jonathan is mistaken for a hit man and hired to carry out a contract killing of the District Attorney.
Max's ex-wife makes an unexpected appearance that draws him and the Harts into a battle for a stolen necklace.
At a Hawaiian croquet tournament, Jonathan and Jennifer stumble into a nest of spies competing for a list of Russian agents.
Jennifer's resemblance to an ancient Egyptian princess threatens to have her entombed forever.
The Harts go undercover at their toy company to expose a costly security leak.
Robert Wagner and Stephanie Powers are Jonathan and Jennifer Hart, a pair of wealthy amateur sleuths. He and his wife Jennifer are able to live the high life, but, their inquisitiveness keep them constantly caught between glamour and danger.
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