A MAN obsessed by serial killers has been detained at Broadmoor maximum security hospital indefinitely for the horrific killing of a mother and son.
Carrying a 12-inch knife in one hand and a claw hammer in the other, Gregory Davis carried out a frenzied attack on 48-year-old Dorothy Rogers and her son Michael at their home in Redbridge, Stantonbury, Luton Crown Court heard on Monday.
He also seriously injured their friend Mick Cowls who survived the attack, but later died following an unconnected incident.
Davis, of Wood Lane, Great Linford, denied murder, but admitted the killings on the grounds of diminished responsibility.
Davis, who now has shoulder-length hair, wore a dark suit, with purple shirt and tie, was flanked by four security guards throughout the hearing.
Appearing unfazed, he spoke only once to answer the charges.
While on remand in Broadmoor Davis has been examined by five leading psychiatrists.
They all agreed he was suffering from a severe form of paranoid psychosis at the time of the attacks as well as a dependence on alcohol.
Nicholas Browne QC, prosecuting, who described the psychiatrists' findings as "unequivocal and uncontradicted", said: "The conclusion of the prosecution is that the psychiatric
evidence is ovewhelming that he was suffering from a number of psychiatric disorders at the time he committed these offences."
He added that Mr Cowls' death in October following a fall, had nothing to do with the incidents on January 28 this year.
Mr Browne went on to describe Davis' character.
He said: "The Crown say he is interested in violence, death, serial killers and serial killing. His diary entries indicate his ambition was to be a serial killer, although many features of his personality seemed to be intact.
"He had a home, a job, and a social life which centred around the local public house.
"At the same time he had delusional beliefs that he could commit the perfect murder and become a serial killer."
Yet, he said, Davis had come from an "utterly respectable family background". His father was a civil engineer, his mother a care assistant and his sister a student at Loughborough University.
While studying art at Northampton University, said Mr Browne, he had completed a project which included the names of serial killers on silver plaques.
It was also revealed that he had thoughts about killing after watching an episode of Taggart.
After college he worked at supermarkets as a shelf stacker and supervisor in Milton Keynes and then Toddington where he formed a relationship with a married woman, about whom he fantasised.
In 2002, Davis's mental health deteriorated and he was diagnosed as an alcoholic, for which he was treated.
Graham Parkins QC, defending, said: "It is clear from the diary entries that this young man knew what he was going to do on this particular day.
"His parents remain loyal to him and they are distraught about how this came to happen.
"The public at large who will read about this must realise this was the action of a sick man."
He went on to say that Davis had been described in the past as "gentle and sensitive, with a wicked sense of humour".
Dr Edward Petch, who was Davis's psychiatrist at Broadmoor, said: "I think he continues to pose an extremely grave, immediate danger to the public."
He added: "I think the nature of these attacks indicate an underlying capacity for violence. There are a number of other issues which give cause for concern. He is a very significant risk."
Summing up the Honourable Mr Justice Aikens told Davis: "You are an extremely grave and immediate danger to the public.
"This grave and immediate danger could continue for a length of time and I cannot say when that danger might end."