Callie Barkley loves animals. As a young girl, she dreamed of getting a cat or dog of her own until she discovered she was allergic to most of them. It was around this time that she realized the world was full of all kinds of critters that could use some love. She now lives with her husband and two kids in Connecticut. They share their home with exactly ten fish and a very active ant farm.

What happens when Marion loses her class pet hamster and a mysterious letter turns up in her locker in this sixteenth book of The Critter Club series?

Finally! It's Marion's turn to take care of Teddy, the class pet hamster! As a member of The Critter Club, Marion is used to being around animals, but she's excited to bring one home. The problem is, after one night in her house, Teddy goes missing! The next day, Marion finds a mysterious letter in her locker with clues that lead her on a scavenger hunt. Does someone know where Teddy is? And who is that someone?

With easy-to-read language and illustrations on almost every page, The Critter Club chapter books are perfect for beginning readers!