Caleb reaches the Threshold: the bridge itself becomes a locus of light and rupture as boards split and a luminous void yawns beneath him. He confronts Ellery in an underground chamber where spirals pulse across stone and water, and a glowing mark on Caleb’s arm answers with its own rhythm. The scene shifts from investigation to initiation—choices feel irreversible, the town’s quiet fractures into revelation, and Caleb stands at the edge of something that will change him and Fogg forever.