Two Terrible Vikings and Grunt the Berserker

It's not easy being the WORST at everything!

Hack and Whack are the very worst Vikings in the village - until a fierce and stinky berserker moves in - NEXT DOOR!

WILL the brand new school help the twins outwit this villain and his vicious dog, Muddy Butt?

And will Twisty Pants, Dirty Ulf and Elsa Gold-Hair help vanquish this foul fiend?

Francesca Simon spent her childhood on the beach in California, and then went to Yale and Oxford Universities to study medieval history and literature. She now lives in London with her family. She has written over 45 books and won the Children's Book of the Year in 2008 at the Galaxy British Book Awards for "Horrid Henry and the Abominable Snowman".