Richards, Justin <br/><br/>
The invisible detective  : killing time 
/ Justin Richards. 
 - London  : Pocket Books  , c2003. 
 - 227 p. 
<br/><br/><label>ISBN: </label>0-7434-6225-4 
<br/><br/><label>Dewey Class. No.: </label>JUV FIC RIC