King Rat is a 1965 American war film written and directed by Bryan Forbes and starring George Segal and James Fox. They play Corporal King and Flight Lieutenant Marlowe, respectively, two World War II prisoners of war in a squalid camp in Singapore. Among the supporting cast are John Mills and Tom Courtenay. The film was adapted from James Clavell's novel King Rat (1962), which in turn is partly based on Clavell's experiences as a POW at Changi Prison in Singapore in the latter part of the Second World War. Plot Corporal King is an anomaly in the Japanese prison camp. One of only a handful of Americans amongst the British and Australian inmates, he thrives through his conniving and black market enterprises, while others, nearly all of higher rank, struggle to survive sickness and starvation while trying to retain their civilized standards. King recruits upper class British RAF officer Flight Lieutenant Peter Marlowe to act as a translator. As they become acquainted, Marlowe comes to like the man and appreciate his cunning. King respects Marlowe, but his attitude is otherwise ambiguous; when Marlowe is injured, King obtains expensive medicines to save Marlowe's gangrenous arm from amputation, but, despite the fact he stays by the sick man's bedside, it is unclear whether he does so out of friendship or because Marlowe is the only one who knows where the proceeds from King's latest and most profitable venture are hidden. However, lower class, seemingly incorruptible British Provost, First Lieutenant Grey has only contempt for the American and does his best to bring him down. Then Grey has to deal with an unrelated dilemma when he accidentally discovers that the high-ranking officer in charge of the meagre food rations has been stealing. He rejects a bribe and zealously takes the matter to Colonel George Smedley-Taylor. To his dismay, Smedley-Taylor tells him the corrupt officer and his assistant have merely been relieved of their duties and orders him to forget all about it. Grey accuses Smedley-Taylor of being in on the scheme, but the tampered weight he presented to the colonel as evidence has been replaced, so he no longer has proof of the crime. Smedley-Taylor offers to promote him to acting captain. When a troubled Grey does not respond, Smedley-Taylor takes his silence as consent. King starts breeding rats and selling the meat to British officers, telling them it is mouse-deer. When