Anagnorisis

Anagnorisis is a moment in a play or other work when a character makes a critical discovery. Anagnorisis originally meant recognition in its Greek context, not only of a person but also of what that person stood for. Anagnorisis was the hero's sudden awareness of a real situation, the realization of things as they stood, and finally, the hero's insight into a relationship with an often antagonistic character in Aristotelian tragedy.

Compare The Reveal.