One for the girls

Don’t watch The Sinner (originally on Netflix; now on BBC4) because, despite your better judgment, you’ll only get addicted after its irresistibly grabby opening. A pretty if slightly distraite mother called Cora Tannetti — Jessica Biel — is on a lakeside beach with her bearded beta cuck husband and their little boy, surrounded by other relaxed groups of weekend picnickers. Suddenly, she takes huge exception to a hunky male sitting nearby and derangedly stabs him to death with a fruit knife. Why?

That’s why it’s being sold as a new genre — the ‘whydunit’ — because obviously we know whodunit already. With seven more episodes to go, it’s probably safe to assume that the answer is much more complicated — but not nearly as plausible — as the one I gave to the Fawn at the end of episode one. ‘I know exactly why she did it,’ I said. ‘Why?’ said the Fawn.