Cameron Todd Willingham's last words before the state of Texas executed him are amongst the ones that have stayed with Michelle Lyons
Young Carolee Ashby was killed in a hit-and-run when she was just four - and the man responsible was not found until decades later
Dr Kris Mohandie has spent his career listening to some of the world's most dangerous individuals
Joe D'Ambrosio was due to be executed before Father Neil Kookoothe discovered new evidence
The GP killed at least 215 people and is suspected of dozens more - including children