The Devil You Know Season 1

Judith Mawson was happily married to Gary Ridgeway for 10 years. Little did she know that he was the infamous Green River serial killer responsible for the deaths of more than 70 women.

Louise Gallagher had two bright daughters, a lovely home and a successful career. All she needed was a dashing prince. Louise reveals how she was conned into giving up her home, career and children by her lying lover, who led her to believe that the mafia was chasing her.

Whilst young Melissa loved her larger-than-life father, a brutal serial killer cruised the roads looking for new victims. Who really was the man she called Dad?

Barbara Daniels reveals what it was like to be married to Oliver Killeen, a fraudster and bigamist said to have had more than 14 wives.

Ashley Wallace reveals how her mother becomes a suspect after both her father and step father die mysteriously, and talks about the day her mother turned on her.

Shortly after she married respected Admiral John Perry, Barbara found out her husband's life was a lie. Soon, she was fighting for her sanity and, then, her life.

Todd Boczkowski reveals what it was like living with his cruel double-murdering father, who brutally killed both his mum and his step mother.

Barbara Reifel discusses married life with surgeon Michael Mastromarino, who made millions from snatching bodies and selling the organs for transplant.