Despite their reservations, Rick and Martha put on smiles when greeting Alexis at the door on Castle. "Get a Clue" is the sixth episode of the show's sixth season.
Alicia Logano guest stars as an accused murderer who takes hostages and will only speak to Castle. "Number One Fan" is the fourth episode of the show's sixth season.
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.
