A friend of Jonathan Hart's is killed in a motor accident just after he has left a health farm, apparently committing suicide. There was no warning of him being troubled so the Harts go undercover to find out what happened at the farm.
When Jonathan buys Jennifer a gorgeous old car for her birthday, she is less than thrilled -- but two Brits seem suspiciously eager to take it off her hands.
Two chemists at one of Jonathan's subsidiaries have developed a new hallucinogen, and their supervisor is killed when he tries to report them to Jonathan.
When Jennifer overhears an acquaintance and his mistress planning to murder his wife on the ski slopes, she and Jonathan jet off to Vail to prevent it -- but are they too late to save her on the ski trail?
When a researcher is kidnapped in a South American country by an old adversary of Jonathan's, he undertakes to personally deliver the ransom and ensure the safety of the researcher and his pregnant wife.
Hairdresser Barry styles the hair of the creme de la creme. But when his clients wind up blackmailed to pay Barry's loan shark, can the Harts help Barry break free before someone else winds up dead?
Maurice, a famous French chef and chemist, has created something world-changing and wants to distribute it through Jonathan's company, but before he can tell Jonathan about it, he is killed and his recipes stolen.
Marital suspicions lead a woman to accidentally kill her husband, but when his debt-ridden brother tries to step into his place, the Harts blow his cover and the widow may take her own revenge.