A hit man is hired to kill Jennifer. - When Jonathan uncovers a scandal effecting dockworkers, a hit man posing as a long lost cousin is hired to kill Jennifer.

Drug traffickers may extort Max's friend. - On a Mexican fishing trip, the Harts must save Max's old friend from being extorted by drug traffickers.

A woman is forced to lie about her son. - A small time crook pressures a former girlfriend to claim their young son is actually Jonathan's child.

A serial killer preys on prostitutes. - The Harts pursue a serial killer that preys on prostitutes, unaware that it's really a vice squad detective.

A wedding invite exposes an extortion plot. - A suspicious invitation to the wedding of Jonathan's former girlfriend exposes an extortion scheme aimed at ganging control of a large family fortune.

The Harts battle over a Chinese artifact. - The death of a local importer draws the Harts into the battle over a valuable Chinese artifact.

A newsstand owner is blackmailed. - Jonathan sets out to help a popular newsstand owner from being blackmailed for a murder she didn't commit.

The Hart's stay a night in a haunted house. - The Hart's night in a haunted house turns into a deadly search for the previous owner's hidden treasures.

The Hart's dog exposes a murder plot. - The Hart's dog exposes an elaborate scheme to kill a reclusive jeweler and steal millions of dollars in gems.

The Harts and Max head for South America. - Jonathan, Jennifer and Max head for South America to save a pair of Hart Industries scientists from a vengeful fugitive.

Clairvoyance reveals a murdered twin. - A young woman's clairvoyance uncovers the murder of a twin sister she never knew.

The Harts look for a cruise liner thief. - A series of thefts aboard a Hart-owned cruise line sends Jonathan and Jennifer on a cruise to find he thieves.

A famous French chef is murdered. - The murder of a famous French chef sets off a search for his valuable collection of recipes.

Jonathan recalls witnessing a murder. - After losing his memory in an accident, Jonathan recalls witnessing a murder.

Jennifer is kidnapped and held for ransom. - A case of mistaken identity results in Jennifer being kidnapped and held for ransom.

There's an addictive dog food scheme. - Freeway's role in a commercial uncovers a plan to sell pets and their owners on a highly addictive dog food.

The Harts are undercover at a toy company. - The Harts go undercover at their toy company to expose a costly security leak.

Jennifer may be entombed forever. - Jennifer's resemblance to an ancient Egyptian princess threatens to have her entombed forever.

The Harts find spies in Hawaii. - At a Hawaiian croquet tournament, Jonathan and Jennifer stumble into a nest of spies competing for a list of Russian agents.

Jonathan is mistaken for a hit man. - Jonathan is mistaken for a hit man and hired to carry out a contract killing of the District Attorney.

The Hart's gift is used in a spy ring. - The Hart's discover that a Valentine's Day gift to some friends is being used to transport secrets by an international spy ring.

An illegal card game leads to a framing. - In order to protect a illegal card game, a Hart Industries employee is framed for murder.

The Harts expose a counterfeit ring. - The Harts and Max go undercover on a gambling cruise to expose a counterfeiting ring.

Jonathan fakes his own murder. - Jonathan fakes his own murder in order to find out who has been trying to kill him.

Jennifer witnessed a murder at a hospital. - Jennifer cannot convince anyone hat she witnessed a murder during a brief hospital stay.

A playwright is murdered for his work. - Jennifer is the only obstacle to community theater director's plans to make the work of a murdered playwright his own.

The Harts are the target of a stockbroker. - Million of dollars in bonds hidden by their home's previous owner makes the Harts the target of a greedy stockbroker.