Charles Augustus Milverton (Short 1922)
"The Adventures of Sherlock Holmes and Dr. Watson" The Adventures of Sherlock Holmes and Doctor Watson: King of Blackmailers (TV Episode 1980)
"The Case-Book of Sherlock Holmes" The Master Blackmailer (TV Episode 1992)
"Elementary" Dead Man's Switch (TV Episode 2013)
"Sherlock" His Last Vow (TV Episode 2014)