"This is my favorite thing in the episode. On one hand, we’re setting up the fact that Cheryl is crazy and maybe her brother does need to take control of her. So she hears this music that no one else can. But the payoff of the joke is when Cecil introduces Captain Murphy: The music plays, we go to a close-up, and then Cheryl goes, “Oh my God! Please tell me you guys heard that!” So yes, she’s crazy, but also, guys, CAPTAIN MURPHY!!!" — Executive Producer Matt Thompson on Cheryl’s craziness during ‘Sea Tunt’.