American law has its own fascinating nuances, and I would not doubt Gfactor’s exegesis of it.
Elsewhere, fraud is commonly a basis for negativing what superficially appeared to be consent, and of course consent is an issue not just in rape cases but in many sexual assault offences, too. Not all fraud counts, however, which is the answer to the concerns expressed above about fraudulently pretending to be rich. But where it does count, some truly odd cases have emerged.
Fraud as to the nature or purpose of the act can negative consent in some jurisdictions. There is a bizarre case called Williams [1923] 1 KB 340 where a teacher pretended that sex was in fact an operation which would improve a singing student’s breathing.
Other cases include those where a fraudulent alternative medical practitioner pretends there is a medical purpose to the penetration. I remember one case I had where the practitioner persuaded his female patient that it was therapeutically beneficial for her to sit on a chair with her feet in a bucket of cold water and with vegetables tied to her wrists, and masturbate. This was a serious WTF? moment for me, but the complainant was young and trusting, so accepted all this was on the up and up. Practitioner was convicted.
I recall another case where a police officer who had some prestige because of his position in a small religious community of which he was a member persuaded young members of the community to become “undercover agents” under his official charge for the purpose of catching pedophiles. He convinced them that they had to undertake various bizarre tasks, and then had them open parcels that had been pre-prepared by him to have needles in them. Once they got needle-stick injuries, he would pretend that they may have needle-borne diseases, and that they could not go to their usual doctor because of the sooper-seekrit nature of the undercover work they were doing. He told them, however, that he could arrange testing through the sooper-seekrit agency he and they were working for. The testing involved having them run about in the bush doing exercises in the nude, then take an intimate swab of themselves while having an orgasm after masturbating. They also had to provide pubic hair samples. He, of course, was present for all this. Amazingly, the complainants bought all this nonsense and went along with it. He, too, was convicted.
Fraud as to the identity of the accused can also negative consent. Some jurisdictions limit fraud as to identity to the inducement of a fraudulent belief that the accused is the complainant’s sexual partner. This limitation prevents prosecution of someone who pretends to be Steven Spielberg to seduce a wannabe starlet.
If the complainant merely makes a mistake about identity that was not induced by the accused, then on the issue of consent it may in some jurisdictions mean that the complainant did not consent. However, a separate issue then emerges. That separate issue is whether the accused had an honest and reasonable but mistaken belief that she was consenting (to him). If he has not induced the mistake as to identity held by her, then in principle the mistake by him (thinking she was consenting) may excuse him.
Gets complicated, doesn’t it?
As always, jurisdiction matters.
The law gets complicated because although the law in most cases is simple enough, there are always unusual cases at the margin that require more than casual examination.