Bernadette's parents appeared before Peterborough Magistrates yesterday morning, September 14, where the case was sent to Crown Court.
Sarah Walker, 37, and Scott Walker, 50, both of Century Square in Millfield, Peterborough, were charged with the murder of 17-year-old Bernadette Walker in the early hours of yesterday morning.
Bernadette was reported missing from Peterborough on July 21 by her parents after she had not been seen for three days.
Police have been carrying out enquiries and searches in an attempt to locate Bernadette, however a ‘no-body’ murder investigation was launched by the Bedfordshire, Cambridgeshire and Hertfordshire Major Crime Unit on Friday, September 11.
Detective Superintendent Jon Hutchinson said: "Whilst my team have made significant progress with this investigation in the last few days, we are yet to find Bernadette therefore my plea is for anyone who has information on what has happened to her, or where she might be, to get in touch as a matter of urgency."
Anyone with information should contact police either by using the online webchat function, or by calling 101 and quoting Operation Penshaw.