Stay in her seat and wait for the power to return. Act: Pick it up and find out who her "constant" really was. The Revelation
She lunged for the drive just as the lights hissed back to life. The man appeared at the end of the carriage, but he wasn't looking for his seat. He was looking at her. His eyes weren't kind anymore; they were calculating.
Elara didn't wait for the next station. As the train slowed for a curve, she pulled the emergency release. The wind whipped her hair as she stepped out into the dark tunnel, the blue light of the drive burning a hole in her pocket.