What happens is the opposite of what was expected, or of what someone planned, in a way that reveals something about the characters or the work's world.
In The Master and Margarita
Thirty tetradrachms! Thirty tetradrachms! Everything I received is with me. Here is the money! Take it, but let me live
Judas, who welcomed Yeshua into his home and handed him over for money, is lured to Gethsemane by a woman who feigns affection, and now offers the "thirty tetradrachms" to be spared. The traitor falls into the exact logic of his own betrayal.
Part Two, Chapter 26: The burial, Judas of Kerioth
Poisoner...
Part Two, Chapter 30: It's time! It's time!, The Master
Subscription
The explanation of each passage, in every device and in every work, comes with a subscription.