The hit series is back, to charm and inspire another generation of baby-sitters! When Dawn starts getting threatening notes and odd phone calls while she's baby-sitting, she doesn't know what to do. The notes are signed "Mr. X," and they're beginning to get scary. Normally, she'd tell the rest of the BSC, but this time things are different.The kids at Stoneybrook Elementary are having a Sitter of the Month Contest. The Sitter of the Month has to be someone who is in control--someone whose jobs always go smoothly. Dawn doesn't want to blow her chances at winning. But what if she's in real danger?The best friends you'll ever have are detectives, too!

Back in California for the surfing competition, Dawn must soon solve a mystery involving a missing surfer, a mangled surfboard, and a ghost who surfs at night.

Fearing that someone is stalking them after a series of dangerous accidents, the Baby-sitters escape for a skiing weekend but become petrified when the trouble follows them and points to someone from their past.

Claudia is so delighted by the arrival of her newborn cousin, the firstborn daughter of her favorite Aunt Peaches, that she volunteers to help and becomes more than a bit of a nuisance when she offers a wealth of child-care advice.

After entering the Sitter-of-the-Month contest, Dawn begins receiving threatening notes and phone calls from someone who is known only as Mr. X.

It's the biggest crime in Stoneybrook history--one of the town's mansions is missing! Kristy and Co. are hot on the trail of the Cat Burglar, who left his sign at the scene of the crime.