Jessica's flying the unfriendly skies to London when a murder and theft occurs in the first-class section of her plane.  Luckily, Errol Pogson from Scotland Yard is also on the flight, but so is the murderer and a number of witnesses with very good alibis.

When a threat is made on her life, Cousin Emma (also played by Angela Lansbury) pretends to be dead, and so Jessica dons her trench coat and travels to London as heir to the estate.

Something is a -brewin' in the Old West when a Wyoming rancher leaves everything to an unlikely stranger rather than his own daughter.