Maurice, an amazing cat who has survived four years on the toughest streets in the whole of the Discworld, reckons that rats are dumb. Clever, OK, but dumb. Maurice, however, is smart. Now Maurice has his very own 'plague of rats' - and his money-bags are getting fuller and fuller. Until the group reach the farflung village of Bad Blintz...

It's not a game any more ...Every town on Discworld knows the stories about rats and pipers, and Maurice - a streetwise tomcat - leads a band of educated ratty friends (and a stupid kid) on a nice little earner. Piper plus rats equals lots and lots of money. Until they run across someone playing a different tune. Now he and his rats must learn a new concept: evil ...