Ghost Hunters and the Mud-Dripping Monster

Stuck in the mud!
Ghoul-hunting is a riot, but exams are not and Tom is taking his Third
Ghost-hunting Diploma.
When he is sent to Bogpool, a misty, muddy village, it seems that it’s
bog-standard ghost-catching and his diploma is in the bag.
But he has entered a dirty trap, and as the village begins sinking
into the mud, a beastly Ghost of Death arises, and the ghost hunters
must face their gravest test yet!