Baby-Sitters Club: Claudia and the Phantom Phone Calls #2

When Kristy, Claudia, Mary Anne and Stacey hear about the Phantom Caller, a jewel thief who's been breaking into nearby homes,they come up with a plan to keep their kids safe. But then Claudia and the other girls start receiving creepy phone calls and they start to get really spooked. Will the mystery caller scare off the BSC?