Maurice Costello
Costello was born in Pittsburgh, Pennsylvania to Irish immigrants Ellen (née Fitzgerald; born 1853) and Thomas Costello (born 1852). He made his film debut in 1908, but was long believed to have debuted in "Adventures of Sherlock Holmes; or, Held for Ransom" (1905), supposedly playing the lead in what is regarded as the first serious film to feature the character of Sherlock Holmes, since it was preceded only by the 30-second comedy film "Sherlock Holmes Baffled" (1900). However, Holmesian scholar Leslie S. Klinger has written that the identification of Costello in the role is flawed. Klinger states that the first identification of Costello with the role was in Michael Pointer's "Public Life of Sherlock Holmes" published in 1975 but Pointer later realized his error and wrote to Klinger stating
Young Sherlock Holmes
Young Sherlock Holmes (also known with the title card name of "Pyramid of Fear") is a 1985 American mystery adventure film directed by Barry Levinson and written by Chris Columbus, based on the characters created by Sir Arthur Conan Doyle. The film depicts a young Sherlock Holmes and John Watson meeting and solving a mystery together at a boarding school.