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?
Natasha O'Keeffe: Natasha Dervill O'Keeffe (born 1 December 1986 in Brighton) is an English stage, television and movie actress. Natasha O'Keeffe:  She is known for her roles as Abbey in the British television series "Misfits", Fedora in ITV's television series "Jekyll and Hyde", and as Emelia Ricoletti in the "Sherlock" New Year special episode "The Abominable Bride". Sherlock (TV series): Sherlock is a crime drama television series based on Sir Arthur Conan Doyle's Sherlock Holmes detective stories.
Sir Arthur Conan Doyle