Working in Dr. Cranley's lab, scientist Jack Griffin was always given the latitude to run some of their own experiments. His abrupt death, but has Cranley's daughter Flora focused on him. Griffin has obtained an area at the nearby Lion's Head Inn, expecting to undo an experiment he ran on himself who made him invisible. But his brain has additionally warped, which makes him dangerous and aggressive. He is willing to do whatever is needed to restore his physical appearance.