The mother of a woman killed by Wiltshire taxi driver Christopher Halliwell has written a letter to the recently jailed murderer, begging him to confess to ending her daughter's life.
In an emotional plea to the father-of-two, Karen Edwards called on him to "tell the truth" over what happened to Rebecca Godden, who was last seen alive by her family a decade ago.
The then-20-year-old had turned to drugs and prostitution, and her remains were only found last year when Halliwell led police to her burial site.
The taxi driver confessed to killing her after admitting responsibility for the death of 22-year-old Swindon office worker Sian O'Callaghan, ending a five-day missing person investigation.
But while there was considerable evidence against Halliwell for Miss O'Callaghan's murder - including DNA and CCTV images linking him with her death - his confession to killing Miss Godden was all police had in presenting a case against him and he has refused to admit anything since.
When the confession was ruled inadmissible in court because it was gleaned by Detective Superintendent Steve Fulcher without having first cautioned Halliwell or provided him with a solicitor, it effectively ended any hopes of convicting him.
In a letter to Halliwell in jail, published in the Daily Mirror, Mrs Edwards writes: "My every waking moment is filled with the horrific thought of her terrifying, frightening moments as she suffered her death at your hands.
"The nightmare never ends. Please could you find it in your heart as a father to tell us the truth about my beautiful girl.
"I am begging you, please, admit Becky's murder."
Mrs Edwards broke down at Bristol Crown Court on Friday when Halliwell was jailed for a minimum of 25 years for murdering Miss O'Callaghan as she made her way home to her boyfriend, Kevin Reape, following a night out in Swindon with friends on Friday March 18 2011.
