The Papadakis family takes in a foster child, a troubled young girl named Lou, and Kristy soon discovers that Lou's difficult behavior makes her a real challenge to baby-sit.

The Papadakis family takes in a foster child, a troubled young girl named Lou, and Kristy soon discovers that Lou's difficult behavior makes her a real challenge to baby-sit.

Everyone in the Baby-sitters Club remembers Lou McNally as the worst kid ever. But now she's back and, to Abby's surprise, acting a little too perfect.

The hit series is back, to charm and inspire another generation of baby-sitters! Kristy can hardly believe it when little Jake Kuhn is reported missing. Jake is one of the kids on her softball team, and Kristy was one of the last people to see Jake before he disappeared.Even though the Baby-sitters and all of Jake's friends are helping look for him, Kristy still feels horrible. And when the police can't find Jake after almost two days, things look really serious. Kristy knows she's just a kid, but she'd determined to find Jake, wherever he is . . . .The best friends you'll ever have are detectives, too!

The hit series is back, to inspire and charm another generation of baby-sitters! Stacey's so excited! She's invited her friends in the Baby-sitters Club to New York City for a long weekend. It's going to be perfect--a party and a sleepover on Friday, a big baby-sitting job on Saturday, and lot of sightseeing on Sunday.But what a mistake! The BSC is way out of place in the big city. Mary Anne sounds like a walking guide book, Dawn is afraid of everything, Kristy can't keep her mouth shut, and Claudia is jealous of Stacey's friends. Can Stacey be in the BSC anymore?The best friends you'll ever have--with classic BSC covers and a letter from Ann M. Martin!

In the landmark one-hundredth book in the series, Kristy disbands the club because of a combination of outside pressures and internal tension.