Is friendship the biggest mystery for this supersleuth  
Eulberg Elizabeth 
 - New York  Bloomsbury Children Books  2016 
<br/><br/><label>ISBN: </label>9781681190518 
<br/><br/><label>LC Class. No.: </label>EJF EULB 
<br/><br/><label>Dewey Class. No.: </label>EJF EULB