<Tr> <Th> Budget </Th> <Td> $25 million </Td> </Tr> <Tr> <Th> Box office </Th> <Td> $82,466,670 </Td> </Tr> <P> The Constant Gardener is a 2005 political thriller film directed by Fernando Meirelles . The screenplay by Jeffrey Caine is based on John le Carré's eponymous 2001 novel . The story follows Justin Quayle (Ralph Fiennes), a British diplomat in Kenya, as he tries to solve the murder of his wife Tessa (Rachel Weisz), an Amnesty activist, alternating with many flashbacks telling the story of their love . </P> <P> The film also stars Hubert Koundé, Danny Huston, Bill Nighy, and Donald Sumpter . It was filmed on location in Loiyangalani and the slums of Kibera, a section of Nairobi, Kenya . Circumstances in the area affected the cast and crew to the extent that they set up the Constant Gardener Trust in order to provide basic education for these villages . The plot was vaguely based on a real - life case in Kano, Nigeria . The DVD versions were released in the United States on 1 January 2006 and in the United Kingdom on 13 March 2006 . Justin's gentle but diligent attention to his plants is a recurring background theme, from which image the film's title is derived . </P>

What is the movie the constant gardener about