Sherlock Season 3 Episode 3 "His Last Vow" Lady Elizabeth Smallwood is one of many victims of master blackmailer and media tycoon Charles Augustus Magnussen and asks Holmes to retrieve some incriminating letters for her. Having cultivated Magnussen's secretary Janine, Holmes breaks into Magnussen's office but is confronted by a mysterious black-clad woman, who shoots him. He recovers in hospital and goes after her to discover her identity and reason for wanting the blackmailer dead before he and Watson visit Magnussen at his country house for a confrontation and shoot-out.
Again this episode had so many fantastic scenes of going into Sherlock's head and seeing how he solves problems. And then there was then ending, which I kind of predicted but still was amazing.. it was really the only way to finish off Magnussen. And of course the final scene we still the "return" of Moriarty.
Can't wait for series four!!!!