The actual reveal, or rather, The Prestige, as it were? Borden’s engineer, Fallon, is actually Borden’s twin brother, who was the real person he used for The Transported Man trick. And ...

But, The Prestige? It's weird ... Bale is playing two roles, both as Borden, but also as Fallon, and the first time through, we have no idea that Bale is doing dual roles, which is great directing ...