Jonathan and Jennifer remember how they first met and fell in love in the midst of murder and international intrigue in the picturesque locale of London.

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

Jonathan and Jennifer set sail, incognito, on a gambling ship in an attempt to crack a counterfeiting ring.

The Harts return home and find their house ransacked. During the clean-up, they discover a hidden hallway and vault. The Harts and their friend Ida are sealed in the vault when the crooks return to claim the municipal bonds hidden in the vault.

An Air Traffic Controllers' strike forces Jennifer and Jonathan to take a train from Chicago to Los Angeles. When Jennifer discovers a body in their compartment, the Harts become involved in protecting a government witness from would-be assassins.

A psychotic man pours a blinding chemical into the Harts pool. Seconds after Jonathan dives in for his morning swim, he surfaces, screaming in pain.

While waiting for Jonathan to finish a meeting in a London casino, Jennifer is used as an unwitting pawn to transport money to the United States by a Baron.

Max is taken hostage. The Harts scramble to save him by participating in a scheme aimed at robbing an international jewel salesman of $20 million in gems.

Jennifer, flying a kite in the park, falls and hits her head. She's hospitalized with a slight concussion. While in hospital, she witnesses the murder of another patient and tries to convince Jonathan of the strange crime is being covered up.

Jennifer's death scene in an amatuer production could become the real thing when the director realizes she can identify him as a murderer of a young playwright.

Jonathan teams with tennis great Martina Navratilove in a game of doubles aimed at exposing a deceitful tennis pro and the stockbroker who is blackmailing him.

The Harts and Max are held at gunpoint when a murderer realizes that Jonathan has incriminating evidence linking him to the death of a champion skier.

A deranged woman who works for Hart Industries has an obsession for Jonathan. She sees Jennifer as a threat to her fantasies of love and finds it essential to eliminate her.

Jonathan witnesses a murder. In his rush to approach the scene of the crime, he is hit by someone on a mo-ped. The blow to his head causes temporary amnesia and the killer must get rid of Jonathan before his memory returns.

At the opera, Jonathan is mistaken for a hitman and is given an envelope containing $100,000 for the job. When the messenger is murdered, Jonathan poses as the hitman in an attempt to save the victims life.

The Harts' unscrupulous lawyer hires an assassin to eliminate Jonathan with plans to court and marry Jennifer and thus gain control of the sizeable estate.

Jonathan and Jennifer enact a troubled marriage in very public places in an attempt to flush out the culprit who is trying to cause a rift between them.

The Harts face a $2 million wrongful death suit when a fender bender results in a driver's death. The Harts suspect insurance fraud.

A drug trafficing scheme is ruined when Freeway's kennel is switched with one containing cocaine.

Jennifer takes refuge in a convent after witnessing a gangland slaying. Jonathan must race to save her when the killer discovers her hiding place.

The Harts are invited to a unique, off-beat party -- a treasure hunt at a haunted house. When another guest is murdered, the Harts race against time to find the murderer before someone else becomes victim.

On a restful trip to Maui, the Harts become involved in a murder when Jennifer hears the wife of Jonathan's business associate plotting to murder her husband.

The Harts want the solitude of their mountain cabin for a weekend. Instead they end up trying to rescue their caretaker from a murder frame by the local sheriff.

Jennifer purchase of a flower from a blind woman leads to an attempted kidnapping when the change she receives is not a quarter but a very rare coin.

Jonathan buys a perfume factory following the murder of the owner by his chemist wife and her lover.