suddenly, the sound of a bomb detonation shakes radin's shelter. he takes the elevator to the surface and emerges to see the world devastated and in ruin. this twist ending is given another twist, however, when we learn that radin, devastated by his hoax's failure, has lost his mind and is only imagining the total destruction. radin sobs helplessly at the foot of a fountain outside his intact building while a police officer tries to aid him.