An attention-seeking nurse who deliberately poisoned patients at an Oxfordshire hospital was found guilty of two of their murders on Tuesday.
Benjamin Geen, 25, secretly administered toxic doses of drugs to patients, causing them to suffer severe breathing difficulties and needing immediate resuscitation.
A jury at Oxford Crown Court also found Geen guilty of causing grievous bodily harm to 15 other mainly elderly patients who recovered after stopping breathing.
He was convicted of the murders of David Onley, 77, and Anthony Bateman, 66, who both died in January 2004.
Police arrested Geen after authorities at Horton General Hospital in Banbury investigated why so many patients were falling victim to sudden respiratory failure.
Geen was found to be the link in each case, but denied he was to blame.
Detective Superintendent Andy Taylor, in charge of the police investigation, said Geen was an attention seeker and had shown no remorse for his actions.
"We may never know what motivated him to select and poison his victims but it is clear that he wanted to be the centre of attention and in order to fuel this desire, brought some of his patients to the brink of death and coldly murdered two of them," Taylor said after the jury's verdict.
"Benjamin Geen has always, through the course of this inquiry, shown himself to be an extremely self centred individual."