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.
Jeremy Brett
as Sherlock Holmes
Edward Hardwicke
as Dr. John Watson
Jenny Seagrove
as Mary Morstan
Ronald Lacey
as Thaddeus und Bartholomew Sholto
John Thaw
as Jonathan Small
Emrys James
as Inspector Athelney Jones
Alf Joint
as McMurdo
Kiran Shah
as Tonga
Terence Skelton
as Captain Morstan
Rosalie Williams
as Mrs. Hudson
Robin Hunter
as Major Sholto
William Ash
as Jack Smith
