Horrid Henry author Francesca Simon brings Hack and Whack and their world of Norse nonsense to life. These two terrible Viking brothers are never far from trouble. There are babysitting woes to conquer – when the baby is called Fire Hazard, you know you’re in for an adventure – not to mention a king who’s more trouble than the toddler. Packed full of amazing facts about Viking life and culture – and lots of laugh-out-loud moments too – this is an event not to be missed!

Francesca Simon is universally known for the staggeringly popular Horrid Henry series. She is also the author of picture books and the Costa-shortlisted The Monstrous Child, which she turned into an opera with composer Gavin Higgins for the Royal Opera House.