Colin and Duck are now friends. They're happily sharing their castle – and they're expecting a visitor … Grandma!

Grandma's brought lots of luggage – and her pet crocodile. Eek! Will she like Colin's unconventional castle? Will she like his vegetarian cooking? And will she like … DUCK?!

The highly anticipated sequel to Colin's Castle, with hilarious new characters and a brilliantly funny final twist.