The actors who have undertaken the role for television include Ronald Howard (son of film actor Leslie Howard), Alan Napier, Peter Cushing, Christopher Lee, Frank Langella, Tom Baker (later the Doctor in Doctor Who), Edward Woodward, Charlton Heston, Roger Moore, Leonard Nimoy, Peter O'Toole (as the voice of the detective in the Australian animated Sherlock Holmes and the Baskerville Case). and Jeremy Brett. Even Basil Rathbone, who portrayed the character in 14 feature films and 8 years on the radio, played Holmes on the small screen. Comic actors such as Milton Berle, Monty Python·s John Cleese, Larry Hag­man, and Peter Cook have all played the master sleuth in television parodies.

     Sherlock Holmes was the first fictional character adapted for television. The Three Garridebs, a trial telecast, was broadcast on November 27, 1937, from the stage of New York City's Radio City Music Hall by the American Radio Relay League. The live presentation was augmented with filmed footage to link scenes together. Louis Hector played the detective, and Wil­liam Podmore played his associate, Dr. Watson.

     Until 1951, Holmes's appearances on television were limited to a variety of special broadcasts, including the hour-long parody Sherlock Holmes in the Mystery of the Sen Sen Murder, on the April 5, 1949, episode of the National Broadcasting Company's (NBC's) Texaco Star Theatre. The satire featured Milton Berle and Victor Moore as Holmes and Watson and a guest appearance by Basil Rathbone as Rathbone of Scotland Yard.

     The first television series of Sherlock Holmes adventures was produced in the United Kingdom. Vandyke Pictures intended for its half-hour adaptation of The Man with the Twisted Lip to be the first of a six­ episode series. However, the pilot, starring John Longden as Holmes and Campbell Singer as Watson, did not impress executives, and only the one episode was broadcast (in March 1951). Three months later, the British Broadcasting Corporation (BBC) aired its own pilot, an adaptation of The Mazarin Stone, with An­drew Osborn as Holmes and Philip King as Watson. In late 1951, the BBC produced the first television series of Sherlock Holmes adventures, but with a new producer and new actors (Alan Wheatley as Holmes and Raymond Francis as Watson). Six of Conan Doyle's stories were adapted to the 35-minute format by C.A. Lejeune, a film critic for The Observer.

     Basil Rathbone, who for many years gave what was considered the definitive portrayal of Holmes, reprised his role as the detective in a half-hour live presentation for the May 26, 1953, episode of the Columbia Broadcasting System's (CBS's) Suspense. The episode, The Adventures of the Black Baronet, was adapted by Michael Dyne from an original story by crime novelist John Dickson Carr and Adrian Conan Doyle, son of the character's creator. The episode was intended as a pilot for a U.S. series, but it was not selected for programming by any network.

     The first and only U.S. television series of Sherlock Holmes adventures finally aired in syndication in the fall of 1954. The 39 half-hour original stories were produced by Sheldon Reynolds and filmed in France by Guild Films. Ronald Howard starred as Holmes, and Howard Marion Crawford starred as Watson. The series' associate producer, Nicole Milinaire, is considered to be the first woman to attain a senior production role in a television series.

     Since 1954, American adaptations of the Holmes stories have been limited to various made-for­ television films (The Return of the World's Greatest Detective with Larry Hagman as Holmes, Sherlock Holmes in New York with Roger Moore as Holmes, and The Hound of The Baskervilles) or televised stage plays (Frank Langella's Sherlock Holmes and The Crucifer of Blood with Charlton Heston).

     In addition to producing made-for-television Holmes films in Britain, the BBC continued to produce other series of Holmes adventures. A 1965 series of 12 adaptations was produced by David Goddard and featured Douglas Wilmer, who, The Times noted, bore an "uncanny resemblance" to the sleuth in the original book illustrations by Sydney Paget. A 1968 series starring Peter Cushing dispensed with many of the conventions invented by other actors for the character, such as the meerschaum pipe, the deer-stalker cap, and the phrase, "Elementary, my dear Watson." The series aspired to be true to the character as written in the novels. In an attempt to capitalize on Cushing's popular work in 1950s and 1960s horror films, the BBC series accentuated the elements of horror and violence in the original stories.

     In 1984, Britain's Granada Television mounted the most popular series to date. Shown under various titles (The Adventures of Sherlock Holmes, The Return of Sherlock Holmes, and The Casebook of Sherlock Holmes) in Britain, the series was broadcast in the United States as part of the Public Broadcasting Services’ (PBS's) Mystery! series. Critics have praised the high quality of the series' productions. including an authentic-looking Baker Street. and Jeremy Brett's performance as Holmes has been ranked as among the finest portrayals of the detective.

     In 1998, BBC Radio became the first production company to complete dramatizations of all 60 Sherlock Holmes adventures. a project that began in 1989. These adaptations star Clive Merrison and Michael Williams as Holmes and Watson.

     The appeal of the character has not been limited to English-speaking countries. An original teleplay, Touha Sherlocka Holmes (The Longing of Sherlock Holmes), in which Holmes is tempted to commit the perfect crime. was produced for Czechoslovakian television in 1972. In 1983, Russian television produced a series of five 80-minute adaptations of Conan Doyle's stories featuring leading Soviet actors Vassily Livanov and Vitaly Solomin as Holmes and Watson.