I always assumed director Joseph Losey was British (he was a blacklisted American). To further confuse matters (and me) 'Mr. Klein' is in French and it offers a profound and disturbing glimpse into 1942 France, sliding into semi-totalitarianism. Not a pretty picture; rather a blandly terrifying or terrifyingly bland one. The film is frequently and aptly described as Kafkaesque. It raises questions that it deliberately does not answer. Another reviewer pointed out thematic similarities to Bergman's 'The Serpent's Egg'. I agree, and both are very good. To be honest, I need to see 'Mr. Klein' again but it is upsetting enough that I have to defer that awhile. And probably after another viewing I'll still be confused. Delon at 41 is beginning to lose his looks in this but it's an excellent performance. Recommended though somber and not easy.