Oh where to even begin, I guess at the start. John is seeing a therapist about the death of his wife, but the conversation quickly swerves to Sherlock before they're interrupted by all hell breaking loose. The we cut to Sherlock interviewing a client which is 80% him showing off his brilliant deductions and 20% actually about a case. We meet Culverton Smith and his incredibly dark secret he wants to confess...he's actually just an unsubtle Jimmy Savile clone. Thus starts the battle between Holmes and Smith which sadly repeats many of the same beats of Season 3's Magnussen. And it's Smith that I have the biggest gripe about in this episode, don't get me wrong Toby Jones is an incredible actor and he really nails it here. But the whole time it didn't really feel like a battle of wits that it should've been. Instead Sherlock is ten steps ahead of everyone (barring Eurus but we'll get to that) and so the threat of Sherlock failing comes from his own drug taking rather than anything Smith did. Seriously, the whole "I planned everything three weeks ahead including where everyone was going to be standing" was stretching the suspension of disbelief so hard it finally snapped for me. Oh lets talk about Sherlock's drug taking and how the show repeatedly puts Sherlock above the real consequences of taking drugs and addiction and instead uses it as fuel to make him even smarter. I did laugh at the nod to no consequences when John said "We watched him shoot a man in cold blood and we let him off because it was fun." And of course we have to address the elephant in the room, Sherlock's secret sibling Sherrinford! Or Eurus I'm not really sure, are they the same person? Is there a fourth sibling? Y'know someone once said to me that they feared that the "woman on the bus" would turn out to be connected to the villain and I said there was no way that would happen...well now I just feel stupid. Indeed, looking back I don't like it either, by changing the one link John had to a normal life (now that Mary is gone) practically everything now revolves around Sherlock and now it feels like a simulacrum of reality within the show. I do call BS on how neither Sherlock nor John recognise Eurus. Anyway I think I've ranted enough for one week.