Fast, Natalie <br/><br/>
The Secret Apartment. 

 - New York :  Delacorte Press,  2005. 
<br/><br/> New to New York City, eleven-year-old Jillian makes friends, spies on her neighbors across the street, and solves a mystery. 
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<br/><br/><label>ISBN: </label>0-385-74671-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Moving,Household--Fiction--Remarriage--Fiction--New York (NY)--Fiction--Grief--Fiction<br/>Mystery and Detective stories