"King Edward asks Sherlock Holmes to perform one more task before his retirement: to safeguard the Star of Africa on a trip to Cape Town. Soon the fabled jewel is stolen and several people end up being murdered."
Christopher Lee
as Sherlock Holmes
Patrick Macnee
as Dr. John Watson
Jenny Seagrove
as Lillie Langtry
Joss Ackland
as King Edward
Richard Todd
as Lord Roberts
Claude Akins
as Theodore Roosevelt
Anthony Fridjhon
as Constantine Mavropolis
Claudia Udy
as Amelia Roosevelt Morrison
Neil McCarthy
as Captain James Morrison
Jerome Willis
as Mycroft Holmes
Ron Smerczak
as Lt. Grisholm
Margaret John
as Mrs. Hudson
Bill Corcoran
Director
Gerry O'Hara
Story
Bob Shayne
Teleplay
Harry Alan Towers
Executive Producer
Eric Allaman
Original Music Composer
Gavin Mey
Stunt Coordinator
Arthur Conan Doyle
Characters
Kenneth J. Withers
Camera Operator