Cherylee Shennan was a successful business woman with a troubled past. He was a convicted murderer, jealous, controlling and - the jury heard - a psychopath.
But when Cherylee Shennan offered Paul O’Hara a job, she’d be repaid with rage and fury.
Today's inquest was told her attacker had been freed from prison in 2013 after 14 years in jail for stabbing a previous partner to death.
Giving evidence, forensic psychologist Sarah Simpson told the court O’Hara was the subject of her dissertation. He had a history of drugs, alcohol abuse and violence against women, she said.
In March 2014 Cherylee said her relationship with O'Hara made her scared for her life.
Police were stood in her house in Rawtenstall when O'Hara burst in armed with a claw hammer. He attacked her and the officers before chasing her out into the street to stab her to death.
This inquest will hear from police, probation and social services over the next four weeks.