Blyton, Enid <br/><br/>
Puzzle for the secret seven 

 - London  Hodder Children's  2002 
 - 154 
 - The Secret seven .
<br/><br/> The gang witness the horror of a house going up in flames! Then there's the theft of a very valuable violin. Are the two incidents connected? 
<br/><br/><label>ISBN: </label>9780340796450 
<br/><br/><label>Dewey Class. No.: </label>823  / BLY-P