Mary Morstan has received a pearl in the post every year since her father's disappearance. This leads Holmes and Watson to the truth about a secret pact between four convicts during the Indian Rebellion of 1857.
Sherlock Holmes
Dr. John Watson
Mary Morstan
Thaddeus und Bartholomew Sholto
Jonathan Small
Inspector Athelney Jones
McMurdo
Tonga
Captain Morstan
Mrs. Hudson
Major Sholto
Jack Smith
Lal Chowder
Williams
Mrs Bernstone
Sherman
Mrs Mordecai Smith
Wiggins
Boatyard Workman
Mordecai Smith
Kartar Singh
Achmet
Jagodish Singh
