If you think your calling from God is to help people die, are you a saint or something more dangerous?

This is the extraordinary story of the Reverend George Exoo, a jolly seeming chap who by his own count has helped 102 people to die. He won't just help terminally ill people. In fact some mainstream euthanasia groups even refer mentally ill people to him. Award winning journalist Jon Ronson, who has been filming George Exoo for six years, follows him on an extraordinary journey. As the FBI close in on him, George recruits a strange assistant who sees assisted suicide as a booming and potentially profitable business. Are they doing the Lord's work or has it all gone far too far?