Tonight's installment of Elementary looks set to be one hell of a penultimate episode, what with Natalie Dormer sweeping back in as Irene Adler. Sherlock's already addled mind is totally blown when he discovers that The Woman is very much alive. We take a trip back to the sleuth's days in London to discover how and why Irene gave him the run around, and get to the root of his drug addiction while we're at it. Benedict my reign supreme, but Jonny sure is giving him a run for his money.