Coraline

A little girl moves to a new apartment with her parents. The parents are busy and Coraline is bored. There's only old folks living in the house. One day she finds a door. There's just a wall behind the door. But later the door is open and there is no wall there... she goes in and...

I'm just saying that rats are excellent diggers and can chew their way through any wood.

I love almost everything by Neil Gaiman.