The Pogmore Experiment

Once again, poor Mr Gudgin finds himself roped into yet another newfangled way to rid Motley Hall of its 'spirited' occupants. This time, it's a scientist who says they're not ghosts, but merely hallucinations, simply electrical emanations. One by one, Matt watches as his new friends disappear and faces the prospect of eternity alone unless he can figure a way to stop the Pogmore 'solution'.