Claudia and the Phantom Phone Calls (The Baby-Sitters Club Series #2) by Ann M. Martin in Bloomington, MN

America's favorite series returns with a new look and a Netflix tv show. Kristy, Claudia, Mary Anne, and Stacey try to be prepared for anything when they baby-sit. So when they 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 when Claudia and the other girls start receiving creepy phone calls while they're out on jobs, they start to get really spooked.