The Confession Before the Credits

You are all on the rooftop as the sirens climb the stairwell below, the rain turning the ledge to glass, and the truth that ran the whole story pinned to one line nobody has said out loud yet. One of you has been someone else this entire time; one of you already knew and stayed anyway; one of you is holding the only proof, deciding whether to let it fall thirty floors or burn it here. This is the scene where the ending gets rewritten — the villain could walk free, the hero could jump, the lovers could turn on each other. The doors will breach in ninety seconds. Say the thing you swore you'd take to the grave, and choose how this movie ends.