After extending her hospitality to a young author claiming to be a distant cousin, Jennifer experiences a series of n...

The Harts south-of-the-border boating holiday turns Jonathan and Jennifer into desperate fugitives, on the run from M...

A young boy shows up at the Harts gate in the middle of the night claiming to be Jonathan Hart, Jr. The child proves ...

The Harts become involved in the world of espionage when Jonathan purchases an antique car for Jennifer. A mysterious...

A deranged woman who works for Hart Industries has an obsession for Jonathan. She sees Jennifer as a threat to her fa...

When a prominent lawyer is murdered, two close friends of the Harts are accused. Jennifer sets out to clear the wife ...

An article written by Jennifer leads a prostitute to ask for her help and the Harts go under cover to bait a killer w...

The Hart home is stripped of everything. It looks like an inside job and all clues point to Max's new love. When Max ...

A Hart Industries chemist is shot and the Harts suspect a female scientist who has discovered a powerful new narcotic...

The Harts are invited to the wedding of Jonathan's former girlfriend in Monte Carlo. She is being forced into a marri...

A dying man gives Jonathan and Jennifer an ancient Buddha statue. The Harts are then thrown into intrigue and danger ...

Jennifer has her portrait done as a gift to Jonathan for their anniversary. When the young artist is murdered, the Ha...

The Harts suspect a college fencing champion of being behind a murderous drug ring. Jonathan fights a razor-sharp due...

The Harts are invited to a unique, off-beat party -- a treasure hunt at a haunted house. When another guest is murder...

Freeway runs away with a gun used to murder a wealthy neighbor. The Harts get involved in capturing the killer and in...

Intrigue in Vail lead Jonathan and Jennifer into the midst of severe bizarre murder plot, including an electrifying s...

The Harts are asked to ransom two scientist employed by Hart Industries when they are kidnapped in South America. Whe...

The Harts have a deadly encounter when they enter the mysterious world of psychic phenomena. A Hart Industies employe...

The Harts uncover a scheme designed to blackmail wealthy patrons of a beauty salon.

The Harts take a luxurious cruise on a Hart Industries liner to investigate a series of jewel thefts. They find thems...

The menu features murder when the Harts take a gourmet cooking class. The Harts vie with an unscrupulous financier fo...

The Harts are caught up in a tangled scheme when a wealthy playboy attempts to take over the family fortune using his...