The total darkness of the sealed vault was suffocating. Iris let out a terrified scream, and I heard Ethan furiously clicking his dead flashlight against his palm."The lock jammed from the outside!" Ethan yelled, throwing his shoulder against the heavy iron door. It didn't budge an inch. "Pia, this isn't funny anymore. We're trapped."

"I don't think a human locked us in, Ethan," Ela whispered, her voice trembling in the dark.