WHO KNOWS WHAT IT WIL MAKE YOU DO.

When Mongoose finds a blue library card hidden among the candy he's shoplifted, his friend Weasel tosses the card away. But the card comes back.

Brenda, a television addict, must endure the Great TV Turn-Off. No more Teen Toons. No more Dude Feud. Then the blue card appears.

On a hot summer day, Sonseray wanders into a library knowing he'll find air-conditioning -- and finds much more.

And April Mendez takes a ride in a bookmobile unlike any other.

In stories that range from humorous to heartbreaking, Newbery award-winner Jerry Spinelli reveals the amazing possibilities lurking behind library doors.