Publisher's Synopsis
The day Billy found aliens in his bathroom started badly. Then the aliens decided to move in - and things got worse!In this book:The most High Emperor of the Universe (Billy's baby brother, Silas) is in great danger. The Blobheads must protect him from the wickedest monster in all creation - a huge creature with twenty-six arms, eight glowing eyes and vile breath, known only as Sandra. And Sandra is a master of disguise...The fourth brilliantly blobby comedy from Paul Stewart and Chris Riddell.
