 Once at Jekyll's home, Tubby goes off exploring and winds up drinking a potion which transforms him into a large mouse.Afterward, Slim and Tubby try to bring news of Jekyll's activities to the Inspector, but the Inspector refuses to believe them.Later, when Vicky announces to Jekyll her intent to marry Adams, Jekyll (who is secretly in love with Vicky) does not share her enthusiasm and transforms into Hyde right in front of her.