"The Jewel Robbery at the Grand Metropolitan." Teenager Mabel West observes Belgian detective Hercule Poirot as he investigates a robbery at a luxury hotel.
"The Adventure of the Egyptian Tomb, Part 1: A Written Challenge from Ancient Times." Poirot and his team investigate mysterious deaths linked to a curse.
"The Adventure of the Egyptian Tomb, Part 2: The Curse of Pharoah Men-her-Ra." Poirot, Hastings, and Mabel search for a murderer on an archaeological dig.
"The Adventure of the Christmas Pudding, Part 1: A Commission from a Prince." Poirot and his team are sent to investigate a mystery at a Christmas party.
"The Adventure of the Christmas Pudding, Part 2: The Royal Family's Ruby." All the pieces of the puzzle come together and Poirot finds a satisfactory solution.
"The Plymouth Express, Part 1: A Body in a Carriage." The dead body of a woman is found underneath a train seat, and Poirot is hired to solve the mystery.
"Motive versus Opportunity." Marple and Mabel hear of a curious crime where those with motive had no opportunity, yet those with opportunity had no motive.
"Sleeping Murder, Part 1: Sleeping Murder Incident." Gwenda tells Miss Marple and Mabel that she has had strange premonitions concerning her new house.
Death in the Clouds (Part 2): "Madame Giselle Paris": Poirot, Mabel, Hasting and the Inspector Sharpe return to Paris. During the flight Poirot studied the positions of the occupants and their movements during the flight killer. In Paris they discover that someone arranged for Madame Giselle was on that flight from Paris. All his fortune will be left to her only daughter was left for adoption for unknown reasons. The Count of Horbury is being blackmailed by his wife who takes money from Madame Giselle to pay his gambling debts.
Death in the Clouds (Part 3): "A Threat to Mrs. Horbury.": All turn out to meet following the "Writer", Mr. Clancy. Poirot asks that Mr. Gale simulate a extortion with Ms. Horbury. Mabel, Poirot and Miss Jane Gray travel again to Paris to unravel the mystery. Mr. Dupont accepts the hint of Poirot to take Miss Jane Gray in his next excavation in Persia. The only daughter of Madame Giselle who inherits an immense fortune appears.
Death in the Clouds (Part 4): "The Heiress of Immense Fortune": After remember that there was already found the daughter of Madame Giselle in flight she was dead, Poirot realizes that she is in great risk of dying, but Mabel he had already left to accompany her to the Grand Hotel and realizes then that she was passing in a taxi with a man going the nearest train station. Inspector Sharpe tries to reach the girl. Poirot gathers all involved to tell what happened on the flight and unravel the mystery.
