Murdoch places a mirror before the reader in the shape of Professor Marcus Valler, an exceptional mathematician, who dismisses his academic career to swim in the murky waters of mysticism. He is a man manqué, tormented by his search for `truth', cosmic identity, haunted by human pain and suffering (particularly the Holocaust). Iris, however, disassembles this intriguing character through the mechanisations of those close to him: Alfred Ludens, the protective, consuming disciple; Patrick `Lazarus' Fenman; Gildas Herne, the agnostic doubter; the Sheerwater ménage a trois; the secretive, perplexing daughter Irina. Marcus ends up in a `Murdochian' mental health service, ensconced in his own villa, surrounded by pleasing English countryside, warmed by the summer sun and neighbouring an ancient stone (shrouded in myth and, seemingly, magic properties). But, as with many Murdoch novels, things are not quite as they appear. Does Marcus have supernatural powers? Will Irina marry Ludens? Can love be shared equally? Is human goodness innate? Is there any meaning in life? All these themes are explored in a narrative that is captivating and mesmerising. Considering this was one of Murdoch's last novels it is interesting to note what Ludens believed Marcus was trying to do `to get beyond the bounds of traditional philosophical thinking' and enter a realm of transcendence, beyond the ego and ordinary morality. I wonder what Sartre would have made of it all?