Blyton, Enid <br/><br/>
The mystery series 

 - London :   Egmont,   2015 
 - 5 vols. 
 - The mystery series .
<br/><br/><label>ISBN: </label>9781405275699 9781405275705 9781405275712 9781405275729 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mystery and detective fiction