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20 Episodes 1980 - 1981
Episode 1
Tue, Nov 11, 198060 mins
The Harts look forward to a nice lunch with Jennifer's friend and her new husband, but her husband suddenly disappears and is shortly found dead. Meanwhile, two men who followed him out of the restaurant next show up in his L.A. apartment and start following who they think is his wife: Jennifer.

Episode 2
Tue, Nov 18, 198060 mins
After witnessing a murder, Jonathan hits his head and loses his memory. As he tries to recover his memory, he starts to suspect he may have had a mistress -- and killed her.

Episode 3
Tue, Nov 25, 198060 mins
Jennifer is kidnapped by a man who wants to get some of the money from an old crime by holding his ex-partner's wife, who happens to be a dead ringer for Jennifer.

Episode 4
Tue, Dec 9, 198060 mins
Freeway is chosen to star in a new dog food ad campaign, but the creator has a secret ingredient and will kill to hide it.
Episode 5
Tue, Dec 16, 198060 mins
Jennifer and Jonathan go undercover to identify a toy plan thief who has become a murderer.

Episode 6
Tue, Jan 6, 198160 mins
An Egyptologist is killed just before the opening of a stagey exhibit, featuring the mummy of an ancient Egyptian prince who legend says is waiting for his princess to join him in death -- and she looks just like Jennifer.

Episode 7
Tue, Jan 13, 198160 mins
Jonathan and Jennifer are in Hawaii for a croquet tournament when a tournament official is stabbed, and the Harts wind up in an international dilemma involving the KGB, MI-6, the CIA, and a fancy key that may unlock deadly secrets.

Episode 8
Tue, Jan 20, 198160 mins
When Max's long-dead ex-wife suddenly reappears, kidnapping and a hot diamond necklace are not far behind.

Episode 9
Tue, Feb 3, 198160 mins
Scalped stolen opera tickets land Jonathan in the middle of a plot to assassinate the DA who is fighting organized crime.
Episode 10
Tue, Feb 10, 198160 mins
The Harts want to give their charity committee gourmet chocolate hearts as a thank-you, but when one turns out to have been part of a smuggling operation, can Jonathan and Jennifer figure out what is going on before someone tries the "special" chocolates from an unknown admirer?

Episode 11
Tue, Feb 17, 198160 mins
Stanley's evening at a singles bar ends with a murder, and it's up to Jonathan and Jennifer to find out who set him up.

Episode 12
Tue, Feb 24, 198160 mins
It's roundup time at the Harts' ranch, but Jonathan and Jennifer are distracted by dying animals, a rumored chemical spill, and a murder.

Episode 13
Tue, Mar 3, 198160 mins
A used bullet hidden in their house by a new Hart employee leads to a cat-and-mouse evening with a murderer.
Episode 14
Tue, Mar 24, 198160 mins
Max's bodybuilder protégé Vince is about to open a gym, but someone tries to steal Vince's famous barbells - twice. They leave Max injured the first time and a Scotland Yard inspector dead the second time, muttering the name Noel Teppman, an almost-mythical gold thief. Jonathan realizes Vince has been pumping not iron but gold and sets a trap for Teppman.

Episode 15
Tue, Apr 14, 198160 mins
To catch a group of counterfeiters who murdered an investigator, Jennifer and Jonathan go on a cruise, she posing as a European countess and he working as a ship's steward.

Episode 16
Tue, Apr 28, 198160 mins
After two attempts on Jonathan's life, he stages his own murder to see why someone is trying to get him out of the way. A stranger who once helped Jonathan out of a snowdrift turns up with a will supposedly leaving everything to him, and Jonathan's lawyer Owen starts putting the moves on Jennifer.
Episode 17
Tue, May 5, 198160 mins
Jonathan and Jennifer are in the midst of a mystery after they agree to pose for a fashion model shoot. A mysterious killer is targeting people involved in the fashion shoot, and Jennifer is next on the list. Jonathan races to figure out who it is and save Jennifer's life.
Episode 18
Tue, May 12, 198160 mins
When Jennifer has an accident in the park and hits her head, Jonathan decisively says she should go to the hospital and she reluctantly agrees. After a checkup, the doctor diagnoses a minor concussion and says that Jennifer must stay at the hospital overnight for observation. Bored and restless during the night, Jennifer walks the hospital hallway and sees a light that means a patient needs help come on. Wondering if she could help, she goes to the room of the patient that may need help and sees a nurse smother the patient with a pillow. When the nurse finds out Jennifer is there, she knocks Jennifer unconscious. The next day, Jennifer tells the doctor and Jonathan about what she saw and the doctor is dubious and Jonathan is confused but claims to believe her. Soon, Jennifer herself believes she was hallucinating but rests her original case when she starts being followed by a stranger. What is she to do?
Episode 19
Tue, May 19, 198160 mins
When a playwright friend of the Harts' is killed and the Harts' copy of his last work is snatched, Jonathan is convinced something in the play motivated the murderer.

Episode 20
Tue, May 26, 198160 mins
The Harts find a hidden room in their house, and someone else may be looking for it to find the missing fortune of the original owner of the house.