How big does a bath need to be for ‘sex frolicking’ to be a possibility? That’s not, if you’d asked anyone six months ago, the question on which the reputational future of the monarchy might be in part held to depend – and yet here we are. Outriders for the Duke of York – who still seems dementedly convinced there exists a path to clearing his name, and that pursuing it will in no way make things worse – have released a trial balloon for his latest line of attack against Virginia Roberts Guiffre’s claims that he abused her while she was...