Everyone knows you should write to Santa only once a year.Santa's a busy man and his elves are even busier.But what if your mum is ill and you've been sent hundreds of miles away to live with your snooty grandma?Santa won't know where you are!Tizzy Biff and her brother Wilf are worried. She writes a second letter and at a fancy London store, they sneak into the grotto hoping to talk to Santa. But security is onto them and when they make their escape they find themselves in the Arctic on the icy Elf Road.Can Santa help their mum and will they make it home in time for Christmas?Join Tizzy and Wilf on their epic Christmas adventure to Santa's real grotto at 123 Elf Road, North Pole.A heart-warming festive story for fans of Matt Haig, Ben Miller, the Christmasaurus and Elf on the Shelf.