A funny, heartbreaking, stunning book by the legendary Diana Wynne Jones--with an introduction by Neil Gaiman. The Dog Star, Sirius, is tried - and found guilty - by his heavenly peers for a murder he did not commit. His sentence: to live on the planet Earth until he can carry out a seemingly impossible mission - the recovery of a deadly weapon known as the Zoi. The first lesson Sirius learns in his lowly earthly form is that humans have all the power...