The shocking true story of Kathy, who had no idea the man she loved would be revealed as a triple murderer.

The shocking testimony of Cindy, who met the love of her life, Bobby Joe Long, when they were just 13 years old. Almost 20 years later he would be found guilty of eight brutal murders.

The ex-boyfriend of Joanna Dennehy describes how he felt when it was suddenly revealed the mother of his children had murdered three men and disposed of their bodies in wheelie bins.

The shocking true story of Terry, ex-girlfriend of serial killer James Randall who was sentenced in 1997 for the brutal murders of two women and suspected of many more killings.

The shocking true story of Martyn, ex-partner of notorious serial killer and necrophile Dennis Nilsen, who murdered at least twelve young men and boys in London between 1978 and 1983.

The shocking true story of Terri, ex-wife of sadistic serial killer Sean Gillis, who was sentenced to life with no parole for the brutal murders of eight women.