
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.
6.9
7.1
6.8
7.0
6.7
6.4
6.9
6.3
6.1
5.9
6.7
6.1
6.4
6.6
6.5
6.2
6.9
7.2