Emily Boynton, the stepmother to three children, blackmails the family lawyer into destroying a second will of her late husband that would have freed the children from her dominating influence. She takes herself, the children, and her daughter-in-law on holiday to Europe and the Holy Land. At a dig, Emily is found dead and Hercule Poirot investigates.

The discovery of a corpse and the ensuing probe by an idealistic journalist threatens to unravel a bumbling local politician's campaign for governor of Colorado.

A new case for the cult detectives! Not by coincidence, a mysterious videotape falls into the hands of Jupiter Jones, Pete Crenshaw and Bob Andrews during Jupiter's birthday party in Rocky Beach. On it is a recording of Jupiter's long dead parents. In their message they want to communicate to their son the key to an especially tricky riddle.

Charlie Chan, with son Jimmy on a week's pass from the Army, takes up a request for help at a castle-home, miles from anywhere in the American desert south-west and inhabited by an eccentric, reclusive historian and his wife, a descendant of Lucrezia Borgia. Once there, he finds the request's legitimacy denied by all who are present, but still necessary as one houseguest has already been murdered, the other guests are at each other's throat, and the Borgia-related chatelain is suspected...

To the Los Angeles elite, Ford Fairlane is known as "Mr. Rock 'n' Roll Detective." This loudmouthed ladies' man serves an exclusive rock star clientele, who depend on his keen eye and smug discretion. So when a heavy-metal musician dies mid-concert, Fairlane is on the case before the lights come up. But things turn shocking when radio personality Johnny Crunch hires Fairlane to find a missing groupie mere hours before he is electrocuted live on air.

Both Scotland Yard and an amateur American sleuth are tracking a master criminal known as The Frog. This moniker refers to the bulging-eyed mask worn by the evildoer, and is reflected by the frog icons painfully tatooed onto the forearms of his henchmen. The trail leads to the country manor of an enigmatic, steely-eyed nabob, whose repressed son has eyes for the artistes at the Lolita cabaret, and whose lovely daughter captures the fancy of both the American playboy and the villain himself. Murder, kidnapping and seduction ensue.

Nick and Nora Charles investigate when Nora's cousin reports her disreputable husband is missing, and find themselves in a mystery involving the shady owners of a popular nightclub, a singer and her dark brother, the cousin's forsaken true love, and Nora's bombastic and controlling aunt.

In this pilot for a proposed TV series, B.T. Brady is a flippant, but somewhat klutzy female private detective in Hollywood who sets out to solve the murder of a obnoxious mystery writer. Along the way, Brady gets help from her flamboyant mother Zandra, a washed-up actress, as well as Brady's live-in boyfriend Wolfe who runs a memorabilia shop.

Newspaper reporter Tim Rourke keeps writing articles that attack the police department for its failure to solve a chain of murders, which nearly leads to the reporter's death. He calls in private detective Michael Shayne, who turns up a blonde and a blackmailer.

Holmes and Watson board a passenger train bound from London to Edinburgh, to guard the Star of Rhodesia, an enormous diamond worth a fortune belonging to an elderly woman of wealth; but within the first hour of the trip, the woman's son is murdered and the diamond stolen and any of the passengers in their car could be the killer thief.

Juliet Forrest is convinced that the reported death of her father in a mountain car crash was no accident. Her father was a prominent cheese scientist working on a secret recipe. To prove it was murder, she enlists the services of private eye Rigby Reardon. He finds a slip of paper containing a list of people who are 'The Friends and Enemies of Carlotta'.

A young, beautiful and rich girl, Dimpy Singh, approaches Samrat Tilakdhari, a private investigator, with a strange case. Their garden got ruined for reasons that appear natural but are not known; leading horticulturists have examined the fading plants but they have not been able to identify the probable reason. Further, her father's favorite horse died; once again the reason for the pre-mature death remains a mystery. That's not the end; Dimpy's father Mahendra Pratap Singh, otherwise a very strong and balanced man, has been experiencing deteriorating health. All these aspects when combined makes the case sound weird and that grabs the attention of Samrat. Samrat along with his assistant friend, Chakradhar Pandey, visits the huge estate of Mahendra Pratap Singh. As he starts investigating, he discovers lots of mysterious facts.