Adrienne Kress

Featuring a mysterious society, a secretive past, and a pig in a teeny hat, The Explorers: The Door in the Alley is the first book in a new series for fans of The Name of This Book Is a Secret and The Mysterious Benedict Society. Knock once if you can find it—but only members are allowed inside.
 
   This is one of those stories that start with a pig in a teeny hat. It’s not the one you’re...