Dawn and the Disappearing Dogs — Ann M. Martin

America's favorite baby-sitters are detectives, too!

Dawn feels terrible when her pet-sitting charge, Cheryl, disappears. She doesn't understand how the huge Great Dane just...vanished.

Then Kristy's puppy Shannon turns up lost, too, and Dawn knows something suspicious is going on. She doesn't think the dogs have run away. Dawn believes that someone's taken them. And she's determined to find those missing dogs. Because what could be more awful than having your favorite pet...stolen?!