Brynwellyn

During the recap at the beginning of this episode they showed Mycroft talking about another brother. This is something I have been wondering about since it first aired. He says, "You know what happened to the other one." When Sherlock shot Magnussen, Mycroft also said, "Oh, Sherlock. What have you done?" Is it possible that Magnussen was their brother? He did have a massive intellect along with being a sociopath that utilizes a mind palace- similarities much? Only reason to recap is that they are going to bring up what happened to the other brother.

Hello, everyone. I'm new on here. Did anyone else notice that the lady on the bus already had the note in her hand while she was sitting on the bus and was looking down at it like it had something written on it. She was there on purpose and pretended to write something on the note before giving it to John. He thinks he's texting her but is probably texting someone else- possibly something to do with Moriarty's plan or the new villain played by Toby Jones.