"I love cats," says Pearl as she takes the collar, apparently pleased. Jade and Ari can hear it jingling as the ghost tucks it away. In exchange, Jade receives a dirt encrusted ring. When she cleans it off, she'll realize it's in the shape of a cat. It has a hidden compartment that contains a tiny silver mouse, like the cat's just eaten it. It must have been lost by another student many years ago.