‘I've felt like murdering for a while’ teen told police

A teenage British girl convicted of a double murder along with her boyfriend, admitted plotting the killings in a chillingly matter of fact police interview.

The girl, who was 14 at the time of the brutal murders, was described as being the “driver” behind the plot to kill dinner lady, Elizabeth Edwards, 49, and her 13-year-old daughter Katie in Spalding in April.

After persuading her 14-year-old boyfriend to take part she planned the “cold and calculated” pre-planned attack, telling police: “I've felt like murdering for quite a while and [the boy] just hates me being upset…it just sort of happened”.

After carrying out the murders the couple took a bath, had sex and settled down to watch the teen vampire film, Twilight. The pair are thought to be the youngest couple convicted of a double murder in Britain.

During her police interview she described how the boy had produced a bag containing four knives and had said to her: “Are you ready to do this?” to which she replied that she was. The boy then attacked Edwards as she slept, pinning her to her bed before repeatedly knifing her in throat and voicebox to prevent her from crying out.

He then carried out a similar attack on her 13-year-old daughter, Katie, before he and the girl took a bath together to wash off the blood.

In her police interview the girl said: “I planned it so we would be clean and refreshed and wouldn’t smell of blood. We spent about 20 minutes in the bath. I like Twilight, so I said to [ the boy] ‘Why don’t we watch it’?”

A judge will reconsider the issue of whether they should be identified when the pair are sentenced on November 10. The boy admitted the two murders. The girl was convicted following a trial at Nottingham Crown Court.

In the months leading up to the killings the girl wrote in her diary, “there is madness in me” and “death is the only way”. She was described as a “ticking time bomb” who was fuelled by “sheer contempt and brutality” for her victims.