Susanna Reid travels to Texas to meet Grandmother Linda Carty, the only British woman on Death Row anywhere in the Western World. Convicted in 2003 of the murder of young mum Joanna Rodriguez so she could steal her new born son Ray, Linda has been awaiting execution for almost 20 years. But this is a complicated case, and there are questions over Linda's guilt and the validity of some the witnesses who testified against her at trial. Susanna hears Linda's story from the Mountain View Maximum Security prison in Texas, meets her daughter Jovelle and interviews lawyers on both sides of this incredible, horrific case.