A Most Wanted Man (a novel and a film): http://www.imdb.com/title/tt1972571
John le Carré: https://fr.wikipedia.org/wiki/John_le_Carré
Tinker Tailor Soldier Spy (a novel and a film): http://www.imdb.com/title/tt1340800/?ref_=nm_flmg_wr_7
The Constant Gardener (a novel and a film): http://www.imdb.com/title/tt0387131/?ref_=nm_flmg_wr_8
The Night Manager (a novel and a TV Mini-Series): http://www.imdb.com/title/tt1399664/?ref_=nm_flmg_wr_4