THE heartbroken brother of an engineer who was brutally murdered by prostitute Tanya Doyle has said he believes she is "psychopathic" and could kill again.

Killer Doyle (40), was sen-tenced to life in prison earli-er this month for savagely stabbing her husband Paul Byrne (48), to death. The Tallaght-born prostitute knifed Byrne more than 60 times in a frenzied attack at his home on September 4, 2009. During her trial, the jury heard a recording of a chilling 999 call where tragic Paul was heard beg-ging for help, saying: "My wife is stabbing me."

The court also heard evidence that Doyle had claimed to be a high-class hooker and that Paul had profited from a sleazy escort agency she was running. Devastated But speaking to the Sunday' World, Paul's devastated brother Noel said his reputation was unfairly attacked by Doyle in court. He claimed that:

His brother was a successful professional with no involvement with the vice trade; • He forgives Doyle but believes she is a psychopath who could kill again;His family were pursued for two years by banks looking for cash for Doyle's cosmetic surgery.

During her murder trial, the jury heard evidence that Doyle had claimed Paul had been taking €900 out of her account every month from her escort agency. However, Paul's brother Noel said Doyle had just made this up to jus-tify her action's. "Besides everything else, Paul didn't need the money. At the height of the Celtic Tiger he was earning €120,000 a year. "It would be totally out of charac-ter for him. Paul was an introvert and shy. He would never have been involved in anything like that and there was no evidence or proof to back up her claims.

"In fact, the only evidence of money transfers was the fact that Psychopath Tanya has no remorse Paul was giving her €1,300 a month after they broke up. "It was difficult to sit there and lis-ten to that. The person who dies does-n't have any course to redress when their character is taken." The court heard Doyle owed more than €70,000 to financial institutions - some of which she spent on breast implants and cos-metic surgery.

She told gardai that she had spent the cash on "boob jobs, nose jobs, veneers". Noel said that banks threatened to sue his family for the money owed by Doyle - despite the fact she had killed their brother. "Those banks sent people out to us to try and get that money back for up to two years, even though we told them about the circumstances. "Having to deal with the banks while we were trying to deal with Paul's death really added to our stress and grief.

" In 2006, Paul was lucky to escape with his life after he was stabbed in the chest by Doyle. Following the stabbing, the cou-ple had effectively separated and Doyle had moved abroad for a peri-od of time. Despite everything, the pair had remained close and Doyle sometimes stayed with Paul when she was in Dublin.

Two weeks ago, Doyle, who is now jailed in Mountjoy Prison's female wing, showed no emotion when she was convicted of murder. Emotion "She was psychopathic, she did-n't show any emotion. She was detached all the time and that was evident since the stabbing in 2006," said Noel. "There was never any sign or indication of remorse. I think a true sense of remorse would help our family.

"I don't have any feelings towards her one way or another. Paul forgave her after 2006. He might not have felt comfortable liv-ing with her and obviously that fear had subsided. "But he wouldn't have liked to see her sent to prison, even though it was his call that got her caught. I feel he would have forgiven her and I have forgiven her too. "But I do think, plainly and sim-ply she could do it again. Without remorse there is no ability to change."