Haley: Oh, you guys are doing that book thing, right?
Phil: Yeah.
Haley: Well, I don't know if this helps at all, but I was just talking to the engineer. It turns out he can't leave the controls because of what's called a dead man's switch. If he takes his foot off of it, the whole train stops. Anyway, you're welcome.
Cameron: If the engineer can't leave the controls, then...
Simon Hastings: He can't commit the murder. It's over.
Phil: Hastings, we are so sorry.