Two of the UK's top criminal barristers, Sasha Wass and Jeremy Dein, explore historical murders where the convicted went to the gallows pleading their innocence, in a new series for BBC One Daytime. Investigating cases which bear all the hallmarks of a miscarriage of justice, they join forces with a living member of the convicted criminal’s family and a variety of specialist experts to re-examine the crime, evidence and trial. While the barristers employ modern forensic techniques to ask whether the original conviction was safe, the family member explores the social and historical context of the crime, and their ancestor's life. Jeremy and Sasha will then decide whether they believe they have a strong enough case to present to a senior Crown Court judge, who will then determine whether he believes the conviction was safe and should be upheld, or unsafe and could be re-opened.