Killer given all-life term could have more victims
A taxi driver who will die behind bars after being sentenced for his second murder has been urged to reveal if he killed more than two people.
Christopher Halliwell (52) joins notorious killers including Moors murderer Ian Brady, Rose West and Peter Sutcliffe, who will also never be released.
He was already serving a life sentence for murdering Sian O'Callaghan (22) in 2011, but has now been handed a whole life order for killing Becky Godden (20) in 2003, both in England.
Detectives are examining new lines of inquiry from calls to their incident room and are convinced Halliwell is behind other offences.
Wiltshire Police will work with other forces and the National Crime Agency to identify potential further victims of Halliwell, who also worked as a chauffeur.
Speaking outside Bristol Crown Court, Detective Superintendent Sean Memory said Halliwell had spoken of his desire to become a serial killer in 1985.
"I am also very, very clear there must be other victims out there, whether they are sexual offences or other women that he has taken," Mr Memory added.
"I can't believe that was his first offence, from being a burglar in the 1980s to a murderer in 2003. There was a significant gap in his offending behaviour.
"On top of that, Sian wasn't murdered until 2011, so what happened in the interim eight years? He talked candidly in 1985 about wanting to be a serial killer and I genuinely believe that's a distinct possibility.
"I will now seek to review outstanding cases. I will appeal to Christopher Halliwell again to tell the truth for once in your life and come and speak to me."
The senior detective said he was clear on what Halliwell's methods were and now needed to "take stock" of what he said during the trial.
"He likes to abduct women, he likes to commit sexual offences, he likes to kill, he also likes to remove their clothing and bury them," he explained.
Mr Memory pledged the force would "pursue" Halliwell for any other offences that come to light.
Halliwell smirked at Miss Godden's family on Monday when he was convicted of her murder by a jury, many of whom returned to court to see him sentenced.
He had, unusually, decided to represent himself during the two-week trial and questioned witnesses from the dock.
In an interview, Halliwell told police: "If I go to court they are locking me up and throwing away the key. I am not stupid."
On Friday, he declined to offer any mitigation against the imposition of a whole life order and simply said "thank you" to the judge following the sentence.
Retired High Court judge Sir John Griffith Williams told Halliwell: "I have no doubt that you are a self-centred and domineering individual who wants his own way. You are both calculating and devious."