Susanna Reid travels to Texas to meet convicted killer Billie Wayne Coble in the days leading up to his scheduled execution. In 1989 he pleaded guilty to triple murder and has been on death row ever since. Now 70, he is fighting for a last-minute stay of execution. If it fails, he will be the oldest man put to death in Texas for more than 100 years. Susannah asks Billie to relive the night of the crime and tries to find out how it has affected him and also speaks to his relatives and others involved in the case.