It's the summer holidays and Rover is busy searching for poo. He works for The Gigglers, small furry creatures who make sure grown-ups are nice to their kids. If they aren't, they get the Giggler Treatment - a smelly, squishy present on the end of their shoe, which is where Rover comes in.

But Rover and his nephew Messi (who is actually very tidy) are distracted from their job by a Big Fat Baby (B.F.B) who's fallen out of her Granny's backpack. It's time for Rover to find the B.F.B, even if it means chasing a postie all over the city, following an aeroplane to Casablanca and leaving the Gigglers with a poo shortage...

The fourth title in the madly funny Giggler series and illustrated throughout by Chris Judge, this is Booker Prize-winning Roddy Doyle at his hilarious, brilliant best.