Can a group of ten year old mates (and one scruffy dog) really outwit the most fiendish, cunning teachers in the universe and, after millions of years, finally make school cool?!

Can Dennis, Gnasher and the crew catch Bea in time before Dennis's parents get home and find out she's missing?

Join Minnie for an epic Viking adventure across the sea! Minnie’s mum is getting married to her teacher (eww!), which of course means she needs the perfect gift. But when searching the tunnels beneath the school for the ideal present, Minnie stumbles across ten-year-old Denys, Dennis’s Viking ancestor, who has been stuck living in the tunnels for centuries. Denys longs to leave his dank prison, but the tunnels are the only thing stopping him from ageing. However, there is a treasure buried in Ireland that could break his curse, so it’s lucky that Minnie’s mum...