The Ghost of Castle MacKenzie

S1 E20: There is trouble on the moors! Ghosts are howling and yowling night after night and cousin Angus is at his wit's end. When Emily and Alexander meet Angus' friend Robby, they discover that with all of these ghosts about, his parents have decided to sell their beloved castle. They have long ago given up all hope of finding the gold supposedly hidden in its walls. Gold? Notail Nogoodnik hears this word and sets out on the scam of his career. If there's gold to be found in Castle MacKenzie, he's just the rat to do it. He meets up with his kilted clan members - the MacRats - and launches a scheme to grab the gold for himself. Meanwhile, it's up to Alexander and Emily to discover who the real ghost is and help Robby keep his castle home.