Blyton, Enid <br/><br/>
Mystery of the hidden house 

 - London:  Hodder Children's Books  1943. 
 - 227 p. 
<br/><br/> The Find-Outers are forbidden to solve any mysteries this summer, so instead they make one up for Mr Goon's nephew, Ern. But they don't expect their fake mystery to turn into a real one, or for Ern to disappear ... 
<br/><br/><label>ISBN: </label>9781444955217 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's stories<br/>Fiction
<br/><br/><label>Dewey Class. No.: </label>J BLY E