peripeteia
/ˌpærɪpɪˈtiːə/; /ˌpɛrɪpɪˈtiːə/Definitions
1. noun
A sudden and unexpected reversal of circumstances, especially in a play or novel.
“The peripeteia in Shakespeare’s Hamlet is the moment when Hamlet discovers the truth about his father’s death.”
2. noun
The turning point in a plot where the protagonist’s fortunes are reversed.
“The author used a peripeteia to change the direction of the story, making it more suspenseful.”