Episode: The Hunting of the Invisible Man. When Griffin reveals that he intends to begin a Reign of Terror and terrorise the vicinity with his invisibility, Kemp realises that Griffin has been driven insane and summons the police. Feeling betrayed, Griffin announces that Kemp will be the first man killed in the Reign of Terror. The police, together with Kemp, concoct a plan to stop Griffin before it is too late.