The Master Blackmailer is one of the stories of Sherlock Holmes. In this part, Sherlock Holmes and Dr. Watson are trying to identify and stop a expert blackmailer, who has destroyed many families. His identity is unknown and the detectives only have a cryptic clue written on a leaf of a book of poetry. Many mysteries are hidden behind this case…

• The Master Blackmailer
• Peter Hammond
• Jeremy Brett
• Edward Hardwicke
• Robert Hardy
• Granada Television
• WGBH