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
The Adventures of Sherlock Holmes
Irene Adler, who is in the first short story, "A Scandal in Bohemia", is prominent in many modern adaptations, despite only appearing in one story. Often in modern adaptations, she is portrayed as a love interest for Holmes, as in Robert Doherty's "Elementary" and the BBC's "Sherlock", even though in the story itself, the narration claims: "It was not that he felt any emotion akin to love for Irene Adler." In his "Sherlock Holmes Handbook", Christopher Redmond notes "the Canon provides little basis for either sentimental or prurient speculation about a Holmes-Adler connection."