Sienna Mercer <br/><br/>
My Sister the Vampire - Series 1 Collection :Double Disaster 

 - London  Hodder Children's Books  2010 
 - 246p.;  20cm 
<br/><br/><label>ISBN: </label>9780603572425 
<br/><br/><label>Dewey Class. No.: </label>MER