In the UK, at the end of 2018, there was a great outcry at the sentencing of the partner of a young woman, Natalie Connolly, to 3 years and 8 months for her manslaughter. He’d claimed in his defence that Natalie had consented to “rough sex”, including beating and to sex acts that caused her terrible internal injury. The Crown Prosecution Service decided not to pursue a murder charge against him. But was this an unusual case: does claiming sex “gone wrong” work in a defendant's favour? In 45% of cases, claiming