Martin Lynch-Gibbon believes he can possess both a beautiful wife and a delightful lover. But when his wife, Antonia, suddenly leaves him for her psychoanalyst, Martin is plunged into an intensive emotional re-education. He attempts to behave beautifully and sensibly. Then he meets a woman whose demonic splendour at first repels him and later arouses a consuming and monstrous passion. As his Medusa informs him, 'this is nothing to do with happiness'.
Iris Murdoch was an Irish-born British author and philosopher, best known for her novels about sexual relationships, morality, and the power of the unconscious. Her first published novel, Under the Net, was selected in 2001 by the editorial board of the American Modern Library as one of the 100 best English-language novels of the 20th century. In 1987, she was made a Dame Commander of the Order of the British Empire.([Source][1].)
[1]: http://en.wikipedia.org/wiki/Iris_Murdoch