Description
What has dragged their teacher underground? Why do the creepy caretakers keeping humming the tune to Itsy Bitsy Spider? And what horrors lurk in the shadows, getting stronger and meaner every minute …? Cut off from help and in danger each time they touch the ground, the gang’s only hope is to work together.
But it’s no coincidence that they’re all there on detention. Someone has been watching and plotting and is out for revenge …