The Other Curse of Mr. M’s Castle

Griffin and his friends must, once again, think outside the box ... Together they must break the other curse ... This time, what you can't see can hurt you ... In this companion book to the award winning story, THE CURSE OF MR. M'S CASTLE, there is a new supernatural threat to the school. Only a few students can actually see the vile creature reaking havoc among the classrooms and hallways. No one is safe from the chaos that it is creating.
All that Griffin, Sarah, and Garrett wanted was to have a normal second semester. However, someone, or something, else has other plans.