• BILLY, the page
• PRIME MINISTER
• HOME SECRETARY
• LORD CANTLEMERE, pompous lord who had no faith in Holmes' ability and was opposed to hiring him.
• COUNT NEGRETTO SYLVIUS, half-Italian, big game hunter, the thief
• SAM MERTON, a boxer, confidant to Sylvius
• STRAUBENZEE, made the air gun.
• VAN SEDDER, ship captain who planned to take the stone to Amsterdam and cut it into smaller stones.
• TAVERNER, French model maker who made the mannequin of Holmes.
• YONGHAL. One of the Scotland Yard men that Holmes tells Watson to contact. He is with the C.I.D.
• IKEY SANDERS, a diamond fence.

SUMMARY

Watson is not living at Baker Street and Holmes deduces that he is a very busy practitioner.

A crown jewel, the Mazarin stone, has been stolen and Holmes is trying to recover it. (£ 100,000)

Watson leaves to get the police and is not seen again.

There is a mannequin of Holmes by the window.

Holmes gets Sylvius and Merton to discuss the whereabouts of the stone while they believe he is in the bedroom playing the violin. Actually it is a gramophone playing the music and Holmes has taken the place of the mannequin.

Holmes slips the recovered stone into Cantlemere's pocket and teases him therewith.

OTHER ADVENTURES MENTIONED

• OLD BARON DOWSON, who said of Holmes, “What the law has gained, the stage has lost.”
• OLD MRS. HAROLD. She left Count Sylvius the Blymar estate. The count quickly gambled it away.
• MISS MINNIE WARRENDER, who was done in by the count..

DISGUISES

• WORKMAN, looking for a job
• OLD WOMAN

UNUSUAL DEDUCTIONS & bits

• The story is told in the third person. Watson is not the narrator.
• Many of the devices in the story have been used before: the bust in the window, the air gun, the villainous big game hunter, Holmes starving himself, dropping the stone into Cantlemere’s pocket. This is not one of the better stories. It may be a work of fiction.
• The stone was named for Cardinal Jules Mazarin.
• Official Abbreviation: MAZA

The adventure of the Mazarine stone was first published in the Strand Magazine, October 1921

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