Hourglass Escapes Downham Market: Letter to Santa

Twas the night before Christmas and all through the house, not a creature was stirring, not even a mouse... all except little Jimmy who has woken up with a start.  He forgot to post his letter to Santa!  As we all know, Santa will not visit if children are awake so Jimmy has gone back to sleep.  We need to find Jimmy's letter and get it to Santa before he sets off from the North Pole - if we don't then Christmas will never be the same again!