"That wasn't so hard," Hickey sasses. "Anyway, course it matters. If I knew your John Doe then I could tell you if he's here, he's not here, or he was here and he died—that is an option, you know," he muses.

After all, it's not like the survival rate of Interlopers is that great. The majority live, yeah. But there's a large number who die or simply vanish from the group (which Hickey is pretty sure is also dying, just without a body).