Perfection. 
 Eleven Australian schoolgirls lose their teacher one stormy day while they are illicitly exploring caves. Don't let the (absolutely amazing) cover fool you--this book is super creepy underneath all the beauty. Ursula Dubosarsky deserves a million dollars for every single one of her jaw-dropping similes. ("She was fit-to-be-loved, with her long, fair plaits as thick as the rope that the deckhands threw to the ferry to the wharf on the trip home from school.") This book is perfect for fans of The Ocean at the End of the Lane. 
 Also, the page numbers are smack dab on the sides of the pages. The sides! It blew my mind!