"Mark's happier with the family, trust me," he says fervently. "He's with us now. And he doesn't get out of this mess untouched either." It feels wrong to go into the details of exactly what happened, so he won't, but - it is important to save his brother too.

Yes, he's sure this is the right decision. For his younger self, at least. As for what he has to do for himself ... that's another question. If he continues to exist like this - which seems likely, given that his younger self is already different and Miles hasn't disappeared - then he still has to find another solution. But this is clear enough.

"Maybe so," he replies, a little breathless. "But talk to Bel. Tell them about our meeting. Make sure it doesn't happen."