Lestrade's pursuit of a suspect is foiled by another police craft. The clumsy cop is the new partner Greyson assigned to her to keep her in line. Holmes' interest is piqued when the cop pops up at crime scenes and is a little too on top of things.
At the Pomiero Touring Club, there's been an attempted theft of a Napoleon Excelsior. Though the craft wasn't stolen, it was vandalized: the expensive gems that adorn the side were pried off, but not taken. Holmes investigates.
Holmes' old friend, Victor Trevor, arrives with an urgent but nonsensical note his father left him before vanishing. Holmes deduces that the note is in code and deciphers it to read "Gloria Scott". But who is she and what is her role in the affair?
After a break in at 10 Downing Street, it appears that the thief was only able to steal one of the African dolls from the Prime Minister's collection, and was not able to find the secret safe where Lord Devlin had hidden the top secret security plans.