There's a blank wall where the door used to be. Then, without warning, there's a man in dirty, blood-spattered clothes sitting with his back against the wall, knees drawn up. He stares at them with hollow eyes, his jaw dark with stubble.

"You people really can't take a hint."

It isn't just the ghost who has become visible. The train car around them has changed as well, the glimpses of carnage seen by each of them resolving into a permanent grisly scene.* Bodies strewn throughout the carriage. Blood spattered on the windows. And the man with hollow eyes watching it all.

*warning: blood, corpses.