The gang at the 12th precinct go all out in the hopes that a delusional witness will lead them to a killer on Castle. "That '70s Show" is the 20th episode of the show's sixth season.
Lanie, Castle, and Ryan are swapping theories but at this point they have no idea that their latest murder will lead them to the Captain's estranged sister.
Kate, I'm not proposing to you so you'll keep your job or because I'm afraid I'm going to lose you. I'm proposing because I can't imagine my life without you.
