Gills of a Kitten

Kitten Winchester was the second oldest child of John and Mary Winchester. Younger sister to Dean Winchester and older sister to Sam Winchester.

But once Dean and Kitten go to gather Sam after their dad goes missing, Kitten offers to watch over Jessica, Sam's girlfriend, while Sam and Dean go follow a case.

Kitten and Jess are visited by the yellow eyed demon that had kill Kitten's mother. Trying to protect Jess, Kitten and Jessica are killed in a fire like Mary.

With grief, Sam and Dean have even more motivation to find the thing that killed their mother, and know their sister and Sam's girlfriend.

But kitten is alive. Found in the woods by a lake in a place called Beacon Hills, a place that is a beacon to the supernatural.