The third book in the comic-form mystery series for emerging readers starring sparky mouse aviator, Amelia Cheeseheart, and her best friend Webster, a banana-loving spider. Every evening after the museum closes, Amelia Cheeseheart and her best friend Webster go exploring. But when they arrive at the Ice Age Exhibit, all the Cave Mice have vanished and there’s a mysterious moaning monster on the loose!World-famous mouse adventurer Stilton Jones thinks he has all the answers, but Amelia isn’t so sure . . . It’s time for Amelia Cheeseheart to investigate!