Blyton, Enid <br/><br/>
The secret seven: good old secret seven 

 - London  Hodder Children's Books  1992 
 - Secret seven .
<br/><br/> Jack's new telescope promised hours of fun until Susie claimed her half share. But old feuds were forgotten once Janet glimpsed strange happenings at Torling castle. Who was lurking in the ruined tower, and why were the resident jackdaws disturbed? 
<br/><br/><label>ISBN: </label>9780340569917 
<br/><br/><label>Dewey Class. No.: </label>F 823 BLY-S  / BLY-S