"Someone moved them," Lucifer snaps irritably, and Sam keeps his mouth shut for all of three minutes before his partly-suicidal curiosity gets the better of him.
"Moved what?" he asks and regrets it when it becomes an invitation for Lucifer to turn all of his attention onto Sam, bright and cruel and worst, bored.
"Go ahead, try to find a constellation you recognize," he challenges, and Sam looks up at the unfamiliar sky, "and you can't because someone moved my stars," Lucifer carries on while all Sam can think is that no one else would care enough to, except for Lucifer himself.