Pensioner's teenage killer wrote murder plan

A teenager who wrote an 18-page plan for committing a murder is likely to receive a life sentence after being found guilty of killing a pensioner.

Kemi Adeyoola, the daughter of Bola Adeyoola, a millionaire businessman, hatched her plan while in Bullwood Hall young offenders' institute serving a sentence for shoplifting.

Five months after the neatly written plan, which she claimed was the draft of a crime thriller, was found in her cell, her former neighbour, Anne Mendel, 84, was stabbed 14 times.

Adeyoola, 18, will be sentenced today. The Old Bailey heard she performed the murder as a dry run before finding a wealthy victim to rob and kill.

The teenage murderer regarded Mrs Mendel, who was found dead by her husband in March last year, as a "soft target" to practise on before finding a "rich, elderly and defenceless" woman to slay for money, the prosecution claimed.

Her plans for the killing were found in October 2004. Sir Allan Green QC, prosecuting, said Adeyoola was a "cunning, highly manipulative and devious" killer. She may have gone to the house disguised as a schoolgirl after adding schoolwear to her list of murder essentials.

Adeyoola had lived next door to the Mendels in Golders Green, north London, for two years. A speck of DNA on Mrs Mendel's hand identified Adeyoola.

Although staff and a psychologist at Bullwood Hall were concerned about what they read, she persuaded a psychiatrist that all she needed was a break in life.

Mr Adeyoola said after the verdict: "She is no longer my daughter. What she did was evil. I don't even like her."