Overview: A look back at the 1953 poisoning of Blackpool resident 79 year old Sarah Ann Ricketts by her new housekeeper , Louisa May Merrifield aged 49. Lousia was married to a much older man of 71 who was famously described as a simpleton , leaving the jury at Manchester Assizes unable to reach a verdict for his involvement. Louisa however was not so lucky and was dispatched by Albert Pierrepoint who coincidentally had honeymooned in the town.