Dormer is set for a three episode arc leading up to the two-hour season finale on May 9. Her arrival may unlock some of the mysteries of Sherlock's past. The CBS press release touting Dormer's casting describes Adler as "Sherlock's first and only love in London. Her mysterious murder by the hands of Moriarty caused his downward spiral into drug addiction."
"We're moving to the next chapter in our show - and in some ways, to a previous chapter in Holmes' story," "Elementary" creator Rob Doherty said in the release. "Irene Adler is perhaps the most pivotal relationship in Sherlock's life, and I can't think of an actress better suited to the challenge than Natalie."
"Elementary" stars Jonny Lee Miller as Sherlock Holmes and Lucy Liu as Dr.