Blyton, Enid <br/><br/>
The circus of adventure 

 - London  Macmillan Children's Books  1994 
 - 187 
<br/><br/> When Bill comes home with a strange guest it proves to be the beginning of an adventure involving a travelling circus and a castle with secret passages 
<br/><br/><label>ISBN: </label>9780330301749 
<br/><br/><label>Dewey Class. No.: </label>823  / BLY-C