Thorn Manor is the sixth central level of Goop's World 2. It is themed after a large haunted mansion owned by King Grex. The boss of Thorn Manor is Phantome. The level spokes off into the following levels:
After completing all of the missions in Big Book Nook, Creepy Catacombs, Manic Mansion, and Grave Garden, the boss level Phantome's Library will be unlocked, accessed from Thorn Manor.