Beckett reunites with a school friend when a famous chef is found dead at her restaurant.
- Cain and Abel: Wolf was killed by his foster brother, David.
- Explain, Explain... Oh, Crap!: Cecily claims David was asleep in bed with him the night of the murder, only to realize he slipped her a sleeping pill back then which means he had the perfect opportunity to kill Wolf.
- Literally Shattered Lives: Wolf was killed after being doused with liquid nitrogen and his hand falls apart when someone tries to check his pulse.
- Oh, Crap!: Beckett's face when she learns Castle overheard Madison saying that she wants to make Castle babies.
- Yandere: The motive. Wolf had slept with David's girlfriend, Cecily and gotten her pregnant. She told David he was the baby's father, but he eventually found out she lied and realized he would lose her as long as Wolf still lived.
