Colorado Parks & Wildlife Research Library

With the help of her friends in the Baby-sitters Club, Dawn is able to find out what happened to several dogs that have mysteriously disappeared.

Jessi can't wait to get to New York City to see her friend Quint dance in his first big ballet.

While Mallory is baby-sitting she finds a cat in the Craine's attic and names him Ghost Cat.

Kristy and the Krashers are spending the night in a spooky old house!

Stacey can't wait to get involved in the plans for Stoneybrook Middle School's Mischief Night Masquerade, but someone is trying to sabotage the event and Stacey and her friends in the Baby-Sitters Club are determined to find out why.

Claudia's room has been ransacked, and her sister Janine is acting strange. It's up to the Baby-sitters to solve the mystery.

When the Baby-sitters are assigned jobs at Washington Mall for a school class, they soon learn of some pretty bad things going on. Is it safe to shop at Washington Mall anymore? The Baby-sitters don't know -- but they're going to make sure this mystery is solved! Ann M. Martin is the creator of The Baby-sitters Club, which has more than 190 million books in print, making it one of the most popular series in the history of publishing. Her...

When Dawn starts getting threatening notes and add phone calls while she's babysitting, she doesn't know what to do. The notes are signed "Mr. X," and they're beginning to get scary. Normally, she would tell the other Baby-sitters, but this time is different.

Discovering a baby boy on her porch when she returns from school one day, Abby and the other members of the Baby-sitters Club must find out where the baby came from and to whom he belongs.

Claudia's room has been ransacked, and her sister Janine is acting strange. It's up to the Baby-sitters to solve the mystery.