An unfaithful wife with "a temper like The Hulk" had her throat cut during a furious row with her estranged husband about his new girlfriend, a court in England has heard.
Dawn Rhodes, 38, was allegedly murdered by carpenter Robert Rhodes, 43, at their family home in Redhill, Surrey.
On the evening of June 2, she confronted her husband about a woman he had met through a dating website, jurors were told.
While his back was turned, she hit him over the head with a knife she had grabbed from the kitchen, the court heard.
Rhodes told police he felt scared when the IT analyst "flipped" just like green Marvel comic character The Hulk.
Simon Russell Flint QC said: "He described himself as being really scared and that Dawn flipped and - as he put it - turned into The Hulk."
The defendant described her making a "growling noise" and said she "came at him at speed", the prosecutor said.
Rhodes managed to disarm her and take the knife, which he then swung out and slashed her across the neck, leaving a 13cm gaping wound, the court was told.
He then fled upstairs, called 999 and barricaded himself into a bedroom where he waited for police, jurors heard.
Officers arrived at the house in Wimborne Avenue and saw Rhodes waving from upstairs. On entering, they found Mrs Rhodes lying face down in the dining room in a large pool of blood.
Rhodes was treated in hospital for injuries to the back of his head and a cut across the palm of his left hand, the court heard.
When told that his wife had died, he allegedly said: "I'm going to prison, aren't I?"
Following his arrest, Rhodes told police he had known his wife for 21 years and they were in the process of getting divorced.
Last Christmas Eve, Rhodes said he discovered she was having an affair with a work colleague and she asked him to move into the loft conversion.
The defendant allegedly told officers that he found out about the affair from looking at messages on her old phone.
Rhodes had met a new girlfriend through an online dating website and his wife found out about it on May 31 - two days before her death, the court heard.
The defendant told officers that his wife's boyfriend was a married man she worked with called Michael Cullen.
He described the man as "a wanker" for taking his wife away and said he had told him: "Thank you for screwing my wife and my life."
He admitted setting up a fake Facebook account in the name of David Pattison to contact Mr Cullen's wife to inform her of the affair, although it had been deactivated by the time of the killing.
Rhodes denies murder and the trial continues.