Two 15-year-olds have been given life sentences for the murders of a mother and daughter who were stabbed through the throat and smothered as they slept.
The teens, who cannot be named because of their age, were both given minimum terms of 20 years at Nottingham Crown Court.
A five-day trial at Nottingham Crown Court was told that the schoolgirl and her boyfriend planned the killings of Elizabeth and Katie Edwards and carried them out “to the letter” when they were both aged 14.
The plan started as “a joke” between the teenagers, because the girl had “a grudge” against the churchgoing dinner lady, the court heard.
The teenagers - thought to be Britain’s youngest ever couple to be convicted of murder - went on to share a bath, have sex, and watch four vampire-themed Twilight films after the murders in Spalding, Lincolnshire, last April.
The female defendant admitted manslaughter but denied murder, claiming to be suffering an abnormality of mental function which impaired her ability to form rational judgments.
But jurors - who heard that the defendants’ toxic Bonnie and Clyde-style relationship “led on to” the killings - took two-and-half hours to reject the girl’s defence and convict her of murder.
Her former boyfriend, who also cannot be named because of a court order, pleaded guilty to murder before the trial began.