Poirot tells a surprised Hastings he's decided to retire and suggests they take a holiday in the Lake District. On the way, Hastings befriends a young woman who is missing a collection of valuable miniatures. The case involves a famous writer and a beautiful woman in a sports car, and to the relief of Hastings Poirot's thoughts of retirement soon seem far away.
A heavily hyped entrepreneur offers to let Space Force use her revolutionary rocket fuel. Dr. Chan gives Captain Ali a crash course in botany.
Flying high after his war games win, General Naird comes crashing back to reality when he learns there may be a spy in Space Force.
Armed with weapons that are less than intimidating, Space Force soldiers — led by General Naird — play war games with their Air Force rivals.
General Naird volunteers for Dr. Mallory's Lunar Habitat Experiment. Meanwhile, Erin tries to throw a party, and Space Force gets a snazzy new look.
While General Naird and Dr. Mallory brace themselves for a contentious hearing on Capitol Hill, Erin gets to know Captain Ali.
With his beloved satellite severely hobbled, General Naird must decide between a well-reasoned scientific solution and a chimp-led rescue operation.
Four-star general Mark Naird — leader of the newly created Space Force — is pressured to launch a satellite despite dire warnings from scientists.
Matthew Davenheim, a rich banker, disappears on a walk from his country house to the village post office, and Inspector Japp of Scotland Yard is put onto the case. Poirot, who has developed an interest in conjuring tricks, bets Japp five pounds that he can solve the mystery without leaving his apartment.
Poirot travels to Cornwall, summoned by a Mrs Pengelley, who suspects her dentist husband is poisoning her because he's fallen in love with his young assistant. Unhappily, Poirot finds Mrs Pengelley dead on his arrival, so he sets out to catch her killer.