My favorite episode has to be The Great Game. I love the scene with Sherlock and Moriarty at the pool. Moriarty is honestly one of my favorite characters and I loved getting to meet him for the first time. Itās also the beginning of Sherlockās character development.
My fav are the full first and second season and then the first two episodes of the third. The rest scarred my soul lol. The lying detective episode was terrible but Benedicts acting in it was beyond incredible. And the last episode of the whole series was actually not bad so yeah....(Guess that was more than one episode)