An evil church warden who murdered his gay lover in a gaslighting campaign of torture has been jailed for life.
Benjamin Field, 28, suffocated university lecturer Peter Farquhar, 69, following a plot to seduce him in order to inherit his money and house in the quiet village of Maids Moreton, Bucks.
Field began a sexual relationship with his lonely victim and tricked him into believing they were in love.
The sadistic killer was sentenced to life with a minimum term of 36 years at Oxford Crown Court on Friday by Mr Justice Sweeney.
Detectives branded Field a "psychopath" who was “fixated with death” and had a hand-written “client list" of 100 potential future victims.
Investigators said Field would have posed an "ongoing danger to society" had he not been caught.
Field secretly fed Mr Farquhar psychedelic drugs in his tea and chocolate, and spiked his whisky, hoping that his eventual death at his hands would look like suicide or an accident.
It was only when the Baptist minister's son began targeting Mr Farquhar's neighbour, Ann Moore-Martin, that his wicked scheme began to unravel.
Oxford Crown Court heard Mr Farquhar, an author, had believed Field, of Olney, Buckinghamshire, was in love with him.
They even exchanged vows during an official betrothal ceremony.
In August, a jury found Field guilty of suffocating Mr Farquhar on his sofa after tricking the lecturer into believing they were in a loving relationship.
Sexually promiscuous Field - who had a string of female lovers and prostituted himself to men - also gaslighted Miss Moore-Martin, a deeply religious retired headteacher, by writing messages on her mirrors purporting to be from God.
He had admitted fraudulently being in relationships with the pensioners as part of his plan to get them to change their wills.
Field accepted he had "psychologically manipulated" the retired teachers but denied any involvement in their deaths.
Mr Farquhar, who was torn about his sexuality because of his religion, died in October 2015, while Miss Moore-Martin died in May 2017 from natural causes.
Prosecutors said Field had a "profound fascination in controlling and manipulating and humiliating and killing" and alleged he had plotted his crimes with his friend, failed magician Martyn Smith, 33.
Field denied murdering Mr Farquhar and claimed he could have died from taking his usual dose of flurazepam and drinking whisky but was convicted by the jury.
The pair met in 2011 at the University of Buckingham, where Field was a PhD student and Mr Farquhar was a lecturer.
The lecturer, a former head of English at Stowe School, had confided in friends that he was homosexual but was celibate.
Field moved into his home as a lodger and they began a sexual relationship.
He had previously pleaded guilty to defrauding Miss Moore-Martin of £4,000 to buy a car and £27,000 for a dialysis machine.
He also admitted two burglaries and being in fraudulent relationships with Mr Farquhar and Miss Moore-Martin.
Field insisted he had acted alone and had not recruited his young brother Tom, 24, or Smith to help with the dialysis fraud.
The jury found Field not guilty of conspiracy to murder Miss Moore-Martin and the alternative charge of attempted murder.
He was also found not guilty of possession of an article for the use in fraud.
Smith, of Penhalvean, Redruth, Cornwall, was acquitted of murder, conspiracy to murder, possession of an article for the use in fraud, two charges of fraud and one of burglary.
Cambridge University graduate Tom Field, also of Olney, was found not guilty of a single charge of fraud.
