"Everyone on the train has been super cool about it so far," Danny tells him. "It's nice, but also weird. I'm never this lucky. So I'm kind of expecting that we run into a world filled with ghost hunters eventually."

A shrug. "My world has a mirror dimension. Its where the ghosts spend most of their time. Sometimes portals open up between the human world and the ghost zone. And portals open up inside the ghost zone all the time, and they can go literally anywhere. Other places and other times too. I kind of halfway expect to see one open in the void some day."