She hid behind a door in the front room and, when Mr Quant returned from using the toilet, jumped out and plunged an ornamental knife with a partially serrated eight-inch blade into his abdomen.
The book goes on to suggest that Camilla knew she was not as beautiful as Charles' first wife, Diana, but was comforted by the fact that Charles always turned to her in moments of personal crisis.
Close A former porn star who was jailed for two-and-a-half years for stabbing her boyfriend after an argument over missing cocaine wept in the dock as she watched top judges almost double her sentence.
It is not known if the overdose was accidental or intentional.
Mansfield died at the age of 34 and left behind five children.
Stylez left the porn industry in 2016 after 10 years.