Supernatural (TV series)/Recap/S07/E11 Adventures in Babysiting

Season 7, Episode 11:

Adventures In Babysitting
Still reeling after what happened to Bobby, Dean becomes dangerously obsessed over finding a way to take down Dick Roman. Meanwhile, Sam decides to help a teenage girl look for her father, a hunter who has gone missing. Sam traces his last steps to a truck stop where the help turns out not to be so friendly.

Tropes

 * Expy: Chrissy is pretty much a younger, female Dean.
 * Kid Sidekick: Much to Dean's exasperation...
 * Little Miss Badass
 * Mouthy Kid: Chrissy
 * Roaring Rampage of Revenge: A muted version, but Dean has every intention of hunting Roman down and killing him.
 * Teeth-Clenched Teamwork: At first. They bond by the end of the episode.