Do you know who Santa Claus really is? You're about to find out...It's Christmas Eve and George and Georgina are curious about Santa Claus. Who is he? Why does he come every Christmas to leave us presents in our stockings? And most importantly, why is he so fat? So Granny sits them down and tells a story. A story about a monster called Atnas. A long time ago, on Christmas Eve, the evil witch Murmur ordered Atnas to go to the village of East Pudding and do some terrible things. This is the story of what happened..."The East Pudding Chronicles: The Christmas Monster" is the first in a series of five books about where Christmas traditions really came from. Join George and Georgina and step into a whole new world of wizards, fairies, elves and monsters - and discover the secrets of Christmas.