The next day, Henry uses the tracking device to find a backpack with a key to the locked cave. Delilah reports a figure in Henry's tower; when Henry arrives, he finds a Walkman taped to the door with an incriminating recording of Henry and Delilah's discussion about destroying the government camp. The next day, someone impersonating Henry calls another lookout and claims that Delilah knows the cause of the station fire, putting her and Henry more on edge.