In this episode we look at the case of Dr Hawley Harvey Crippen, a meek and mild mannered Homeopath from the United States who moved to London with his wife before murdering her and burying her body in the Cellar of their home. He and his lover, Ethel Le Neve, then set off on a ship bound for Canada disguised as father and son. This sparked an international chase where Dr Crippen and Le Neve were brought back to London to face justice.