There have been some, such as "The Spy Who Came in from the Cold," "The Tailor of Panama" and "The Constant Gardener," that have done a reasonably good job of transposing the material into cinematic terms without losing too much of the material in the process while others, including the largely forgotten likes of "The Deadly Affair," "The Looking Glass War" and the dreadful "The Little Drummer Girl," that made such utter hash of his words that even those who had actually read the stories had virtually no idea what was going on at any given time.
There might not be any 20th Century novelist as well-served by dramatic adaptations of his works as British spy author (and former British spy) John le Carré: the not-as-great films taken from his body of work feature such wholly enjoyable thinking-heavy thrillers as The Russia House and The Tailor of Panama , while the great ones include the rather terrific '60s film The Spy Who Came in from the Cold and the outstanding 1979 BBC miniseries Tinker Tailor Soldier Spy , one of the finest things aired on television in that decade.
Fans of The Ipcress File and le Carré's The Spy Who Came in From the Cold, rejoice.
The following year, Smiley slipped into “The Spy Who Came In from the Cold,” which remains le Carré’s most celebrated work, partly because it scraped every lingering speck of James Bond from our understanding of what spying might entail.
Standouts include Cyril Cusack as the borderline villainous MI6 chief, Michael Hordern as a pervy and pathetic low-level communist operative, and Rupert Davies as the polite, mostly well-intentioned agent, George Smiley – le Carré’s inherently decent, utterly repressed signature character who was later played by Alec Guinness in two acclaimed TV adaptations: 1979’s “Tinker, Tailor, Soldier, Spy” and 1982’s “Smiley’s People.”