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

Kristy, Claudia, Mary Anne, and Stacey have had some strange adventures since they started the Babysitters Club. But nothing's been as spooky as what's going on right now. The baby-sitters have been getting mysterious phone calls when they're out on their jobs. When a phone rings and they pick up, there's no one on the other end of the line. Claudia's sure it's the Phantom Caller, a jewel thief who's been operating in the area. Claudia has always liked reading mysteries, but she doesn't like it when they happen to her. So she and the baby-sitters decide to take action with some very mixed results