Fourteen-year-olds killed mother and daughter before watching Twilight, court hears

A boy has pleaded guilty to killing a mother and daughter by stabbing them in their beds, a court has heard.
Elizabeth Edwards, 49, and her 13-year-old daughter Katie were both found dead at their Lincolnshire home in April.
A jury has now been told that the two were killed by a young couple, who cannot be named for legal reasons, who were aged just 14 at the time.
The boy, now 15, has pleaded guilty to their murders while the girl, also now 15, is claiming manslaughter on the grounds of diminished responsibility.
Prosecutor Peter Joyce QC told the jury that the mother and daughter were stabbed in the throat by the boy after both he and the girl came up with a plot to murder them.
Mr Joyce said there was no doubt that both the boy and the girl were as responsible for killing the two. However the girl is saying her defence is that she had a diminished mental state.
However Mr Joyce said he would be presenting a prosecution case which would make it impossible for her to prove that her responsibility was diminished.
The killings took place on April 13.
Mr Joyce told the court that the boy stabbed Mrs Edwards a total of eight times, including three times in the throat, damaging her jugular vein and almost completely severing her windpipe.
The boy than stabbed Katie twice in her neck before taking a pillow and smothering her.
After the stabbings, the couple took a bath to wash off the blood before they sat down to watch Twilight films; the vampire saga starring Robert Pattinson and Kristen Stewart.
The prosecution said the original plan had been for the boy to kill Mrs Edwards while the girl stabbed Katie Edwards.
The knife which had been used to stab both mother and daughter was later found on a table in Katie’s bedroom. When she was questioned by officers, the girl reportedly told police that she and the boy both planned to commit suicide after they had committed the killings.
Mr Joyce said: “The prosecution case is that this girl together with the boy planned and carried out the cold, calculated and callous killings.
“Afterwards there has not been a hint of remorse and the prosecution case is that she is as guilty as the boy of the murders.”
The case continues.