I pretty much guessed that Irene was alive ages ago, but I'm annoyed that I spoiled myself, otherwise that ending would have been truly epic for me. I really hope that Irene herself is Moriarty. Ever since the fate of Ritchie's Irene and Moffat's BBC version, (some people hate Moffat for Doctor Who but my only real issues with him are on Sherlock), I've wanted an Irene Adler who was more empowered.