Keene, Carolyn <br/><br/>
The hidden staircase 

 - New York :   Grosset & Dunlap,   1990 
 - 182 p.  
 - Nancy Drew mystery stories ;  2 .
<br/><br/><label>ISBN: </label>9780448095028 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rescue work --Juvenile fiction<br/>Wills--Juvenile fiction