The Children of the Red King #3: Charlie Bone and the Invisible Boy by Jenny Nimmo

Paperback in As New condition. Still wrapped in plastic. Includes "Children of the Lamp" a "sneak peek at a new adventure". When the Red King left Africa, he took with him a rare snake, a boa, given to him by a traveling wise man. The boa's skin was black and silver and its eyes like beads of jet. Sometimes, the shining eyes would close, but this was a deception...In the ruins of the castle of the Red King, Charlie and Tancred discover a tree-girl that whispers secrets to them and asks for their help in restoring her to a real girl. When Charlie returns to help her, he finds that the tree has been destroyed.Meanwhile, the Yewbeam sisters are trying to marry Amy Bone, Charlie begins to hear portraits speaking, and a new music teacher has arrived at Bloor's Academy. Soon Emma discovers that the invisible boy living upstairs in the attic is her older brother, and when Manfred finds out their plans, he threatens to lock up Emma.