Jeff Edwards

They know how to kill and how to cure. Inside a hospital, at home, or maybe even next door. They are trained to save lives but also know how to take them. Delve into the stories of killers who broke the Hippocratic Oath to use their medical knowledge for murder, taking the lives of often vulnerable victims instead of caring for them.

In a South London police station, officers are shocked to discover a man has been murdered in a locked cell. The suspected killer is his cellmate, a homeless man named Kieran Kelly, in custody for theft. Police interview 53-year-old Kelly, who has a long rap sheet for petty crimes, and he calmly confesses to killing the man in the cell, but detectives are unprepared for what comes next.