The situation at the heart of "Josef K" is genuinely unsettling, featuring what feels like Anthony Perkins’ finest work. The film presents a disturbing thriller centered on a man who wakes up to find the police in his room and is arrested, facing an unspecified trial. The central question—what has he done?—is one that he repeatedly attempts to answer, but without success. His confinement isn't standard procedure; he enjoys considerable freedom as long as he’s available for questioning by those seemingly randomly assigned to determine his guilt or innocence. As frustration mounts, both his and the viewer’s, he investigates the lives of people around him, wondering if answers might be found there. Fortunately, his uncle intervenes and hires the lawyer "Hastler," portrayed by Orson Welles—but will this prove beneficial or problematic? This is Kafka at its peak: a blend of cunning plots with an oppressive atmosphere reminiscent of “Big Brother,” combined with a deliberate withholding of information that amplifies young “Josef’s” mounting exasperation, which effectively transmits itself to the audience. Over time, we gain insight into this man—his imperfections, quirks, and unusual interests—yet remain unsure of his alleged crime! Much of the film's tension comes from its shadowy cinematography and a strong supporting cast who do well to maintain the sense of mystery. Welles directs with skill; Jean Ledrut’s score is atmospheric and unsettling, complementing a screenplay that effectively conveys feelings of annoyance and discouragement. Even those who typically enjoy horror films should give this one a look—it's among the most frightening movies I've ever encountered.

Source on TMDB