Murdoch Iris. A Severed Head

A satirical, sometimes farcical 1961 novel by Iris Murdoch.
Primary themes include marriage, adultery, and incest within a group of civilized and educated people. Set in and around London, it depicts a power struggle between grown-up middle class people who are lucky to be free of real problems. A Severed Head was a harbinger of the Sexual Revolution that was to hit Britain in the 1960s and 1970s.