6) What Was The Point In Eurus’ Disguises?
The reveal of Eurus’ true nature in “The Lying Detective” is one of the best mind-blowing moments in all of Sherlock. Despite the truth being right in front of us, few of us realized that the woman who flirted with John on a bus, the client who had chips with Sherlock and the German therapist were all the same person.
As Eurus’ fiendish plan unfolds in “The Final Problem,” however, it becomes clear that pretending to be those people had no relevance on her big evil scheme. Sure, it produced a great moment and did a good job of showing actress Sian Brooke’s range, but we’re not sure that raiding her dress-up box actually had a purpose.
The only thing we can think of is that, after six years of planning, her scheme was finally ready to go. All she needed to do was alert Sherlock to her existence and lure them to Sherrinford. So, what she did was run rings around them for a while and then run back to her lair, waiting for them to come and get her.