Patty tries to find out what Gregory knows about the case. Arthur Frobisher tries a new strategy to save his family and his money. David and Ellen have strains on their relationship as Lila tries to reenter David's life.
Strange happenings and spreading radiation at Global Dynamics lead to speculations that an abandoned research project concerning invisibility might have been revived. When Sheriff Carter accidentally becomes involved, the effects of invisibility threaten his life.
