Horror in the Dells

After their teacher takes the 'Super Sleuths' and their classmates to the nearby dells as a stimulus for a creative writing project, the Sleuths become intrigued by something Ms Salmon told them. Something about a mysterious plume of smoke rising from the dells at midnight on Halloween and what it might portend. Although Ms Salmon only wanted to get their creative juices flowing for the story they were to write, the Super Sleuths decide that they must go and investigate, that very evening, the 31st of October. Halloween!
Little does any of them know what fate awaits them, on the stroke of midnight, in the pitch-black, misty, creepy dells, a far different place by night than day. Jess, Andrew, Richard, Sophie and Kelly must dig deep to face and escape the horrors they encounter. Will they get away or be forever lost in this dismal half-world between their reality and the horror in the dells?