One Flew Over the Cuckoo's Nest (9780141187884)

Tyrannical Nurse Ratched rules her ward in an Oregon State mental hospital with a strict and unbending routine, unopposed by her patients, who remain cowed by mind-numbing medication and the threat of electroshock therapy. But her regime is disrupted by the arrival of McMurphy - the swaggering, fun-loving trickster with a devilish grin who resolves to oppose her rules on behalf of his fellow inmates. His struggle is seen through the eyes of Chief Bromden, a seemingly mute half-Indian patient who understands McMurphy's heroic attempt to do battle with the powers that keep them imprisoned. The subject of an Oscar-winning film starring Jack Nicholson, One Flew Over the Cuckoo's Nest an exuberant, ribald and devastatingly honest portrayal of the boundaries between sanity and madness.

If you enjoyed One Flew Over the Cuckoo's Nest, you might like Anthony Burgess's A Clockwork Orange, also available in Penguin Modern Classics.