"Five Orange Pips": Mr. John Openshaw approaches Sherlock Holmes and Dr. Watson, with a very peculiar case. He fills Holmes and Watson in on the details of how his uncle and father received strange letters that said, "K.K.K." and that included an instruction to put the papers on the sundial outside and five orange pips. Both of them died in mysterious circumstances. And now John Openshaw has received the same letter.

"The Noble Bachelor": A few weeks before Watson's marriage, Holmes receives an envelope with a nobleman's seal on it. It belongs to Lord St. Simon, whose wife has disappeared. A woman named Flora Miller, has been arrested for murder, as she reportedly tried to interrupt the wedding. Sherlock Holmes, however, already has the mystery solved.

"The Engineers Thumb": A hydraulics engineer, Victor Hatherley, has lost his thumb. He is brought to Dr. Watson, by one of the guards who know the doctor. After treating him, Watson takes him to Holmes, to solve the mystery of the missing thumb as it does not appear to be a engineering accident.

"The Blue Carbuncle": Peterson, a hotel employee both Holmes and Watson know, brings them a hat and a goose, that he found when he was trying to save an elderly man being harassed by a group of guys. The goose is labeled “To Mrs. Henry Baker”. Holmes keeps the hat, and lets Peterson have the goose. Some time later, Peterson comes back running to Sherlock Holmes, as he has found a blue diamond in the throat of the goose, which Holmes immediately recognizes as The Blue Carbuncle that was stolen a few days back from Hotel Cosmopolitan.