Carolyn Keene 
Big Worry in Wonderland [EPUB ebook] 

Nancys class is performing Alice in Wonderland, and everyone is busy practicing for the big day. Rehearsals are running smoothly until the Mad Hatter, pesky Orson Wong, discovers that his magic hat has vanished. How will the Mad Hatter remember his lines without it? Sounds like a case for Nancy Drew. But Nancys not so sure she wants to solve this one Orson is such a pest! Even worse, Orson wants to help Nancy solve his own case, and Nancys friends wont even investigate the case if hes around. Will a new partner mean saying good-bye to old friends? And can Nancy and Orson uncover the Hatters hat before curtain time?