Sally and the Night Doors

Sally is eight and she has a plan. Stay awake, catch the tooth fairy, see the wings. She has the torch. She has the tooth. She has Rory the wolfhound, who already knows something is coming.The fairy who arrives has no wings worth mentioning. What she has is a ledger, a pair of silver calipers, and the air of someone who has been doing this job since before anyone alive was born. Her name is Vesper...