He asked about family members, and Joan felt a twist of sadness. She missed Sherlock. She cared about the Sherlock here, of course, but it wasn't the same. He wasn't him. He wasn't hers. But him not being here was good. She didn't want him to go through all this, and if he were here, they could use him against her, and her against him.

"I haven't heard of anyone who remembers exactly how they were taken," she said, "so I don't think anyone knows how that happens. But...I do know of at least one instance of them bringing someone they care about here specifically to threaten them. Keep them in line."