An unforgettable friend returns in this warm and fantastically funny sequel to the bestselling debut Einstein the Penguin.

Imogen and Arthur have been missing their friend, the penguin, Einstein, since he went back to Australia. So when an opportunity for him to return arises, they jump at the chance.

But then Einstein and his friend Isaac are kidnapped. It's time to turn detective again...

'A delightful series' The Bookseller