Will questioning the banshee provide answers on Teen Wolf. "Monstrous" is the tenth episode of the show's fourth season.
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Peter gets the opportunity to question the Benefactor about his missing money.
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Teen Wolf Season 4 Episode 10 Quotes

She was listening to the ranting and raving of a lunatic. A former lunatic, I'm much healthier now.

Peter

Stilinksi: The only person I'm pointing a gun at is you.
Peter: Then you better make it a perfect shot, Sheriff, because I don't go down easy.