M issouri Williams’s darkly absurd and wilfully grotesque debut novel, The Doloriad , concerned itself with the aftermath of a world-shattering catastrophe. Her second takes place in what feels like the beginning of one. The Vivisectors is set in an ancient and unnamed university town – we could call it Oxford or Cambridge, but let’s not – which is rapidly being overwhelmed by vegetation: avenues lined with “orange columns of flamevine and purple bougainvillea”, arches “dripping with wisteria”, the inescapable “stink of a distant magnolia”. A fraternity of mysterious gardeners seek to keep the chaotic foliage in check, but they are hamstrung by a bitter dispute with university officials. Power games and proxy battles ensue. It is a hot summer and decay is rampant: revolution is in the air.…