This is the story of Alison Hubble Who went to bed single...And woke up double! A tale of mathematical Mayhem from magnificent illustrator Bruce Ingman and master storyteller Allan Ahlberg! Alison Hubble is shocked when she wakes up to find a twin in the bed next to her. And she keeps doubling...and doubling...and doubling! This is a fantastically funny and completely clever new picture book from the critically-acclaimed pair behind The Pencil and The Runaway Dinner.