Mystifying — Helen Cresswell

Just in time for the spooky season, this collection of nineteen stories is full of mysterious circumstances and spine-tingling plot twists. Edited by one of the greats of children's literature and including stories by such masterful authors as Ursula Le Guin, Joan Aiken, Diana Wynne Jones, and Agatha Christie, this collection is just the thing to get readers' pulses racing.