After he was paralyzed in an accident, Thomas Dunkley became Shaun Cummins friend. Shaun promised to make him rich, but when the payday never came, Dunkley took what he thought was rightfully his.
Malcolm Webster pursued women he could exploit for money. After killing his first wife for a life insurance payout, and getting away with it, he tried the same again, 11,000 miles away, with wife number two.
Douglas Perry craved woman company, but he also hated them. In 1990 he shot three sex workers dead. Years later a cold case review identified him. By this time, he had become Donna- and she accepted no responsibility for his actions.
After a whirlwind romance Kathy Augustin and Chaz Higgs were married, but the relationship soon soured. He joked to workmates about committing the perfect murder - so when she died, detectives didn't have to look far for her killer.
Paul Novak loved the fast-paced life of a New York paramedic. Unlike his wife Catherine, who craved tranquility. When Catherine discovered the affair he had, Paul persuaded a colleague to help him kill her.
When Iain and Sally Lawrence got together he thought she would bring him wealth and status. She was a successful businesswoman, he was a pilot. But before long, their relationship crumbled.
80 year old Lea Adri-Soejoko was the heart and soul of her gardening community. When refugee Rahim Mohammadi was given an allotment she made him welcome and took him under her wing. She couldn't have known he will kill her.
Kenneth Countie was a vulnerable young man who craved a loving relationship. He thought he'd found that with Sheila LaBarre. But Kenny became the latest in a string of men she had used and abused.
William Howell preyed on drug addicted prostitutes he picked up in his van. They ended up buried in shallow graves in a place he called his 'Garden'. The extent of his sadistic crimes were revealed when he boasted of them to a cellmate.
