Knock Knock, Who's There?

"Knock Knock, Who's There?" is the first segment of the eighteenth episode of season 12, and it is paired with "Pat Hearts Squid." In this episode, SpongeBob watches Mr. Krabs' house and tries to make sure no one gets in.

Characters

 * SpongeBob SquarePants
 * Patrick Star
 * Eugene H. Krabs
 * Pearl Krabs

Music

 * Ahoy Landlubbers - Title Card