A drug addict sex worker who was desperate cash brandished a bread knife at the throat of a terrified 74-year-old man who had previously paid her regularly for sexual services.
Charlotte Newton, who had a heroin habit, travelled to her victim's house intending to rob him because she thought he was an easy target.
The greedy and aggressive 25-year-old also thought the pensioner would be less likely to call the police for help because of their secret sexual arrangement.
