Question: Natasha O'Keeffe is known for her role of Emelia Ricoletti in "Sherlock", the crime drama tv series based on which author's detective stories?
Sentence (from "Natasha O'Keeffe"): Natasha Dervill O'Keeffe (born 1 December 1986 in Brighton) is an English stage, television and movie actress.
Relevant evidence: Yes