Jericho S01E04 - The Hollow Men

A serial killer, who targets courting couples, is on the loose in London just as a great smog descends on the capital, shutting the entire city down. When the mutilated bodies of a young couple are found in Battersea park, the press believe it to be the return of the 'Butcher' who is believed to be responsible for a series of unsolved murders from the thirties.