I can't understand the end of the second season of the new Sherlock Holmes.

It's simple. In fact, it was finally said that Irene was taken away by a terrorist organization and beheaded. Didn't Irene send her a message? In fact, the person who was beheaded next to her was SH. When Irene's message was sent, that person remembered the message sent by Irene to SH (you know), which proved that it was SH, and SH saved Irene (there was not always a bridge before, and Irene sent a message, so she heard a bell ringing around, and SH was actually there every time. In other words, the whole terrorist organization took Irene and released the news of killing Irene. All this was set by SH, so that everyone thought Irene was dead, so no one would chase Irene again.

Everything is under the control of SH.

That's it, pure hand, please give points.