I heard about someone had "one-night-stand" with a woman he knew from LKF. He has been carefully going out with her for a while until they had sex one night. Next thing he knew someone rang him up and said he raped his girlfriend and even got the condom with his sperm as evidence. This man is a professional so certainly didn't want his name being exposed if possible.
So he was "caught yellow-feet chicken" over this matter and was blackmailed for a 6 digit amount. At the end he called police about this blackmail and nothing happened at the end.