Emerging from the 2000 film of the same name, The Crimson Rivers, beginning in 2018, is a French crime series with English subtitles, and it has run for four seasons so far. The writing here is quite good. The stories—each unfolding over two episodes—are carefully constructed and frequently feel fresh. The characters possess a realistic, experienced, and somewhat weathered quality that adds to the show's overall appeal. It’s genuinely captivating. I didn’t intend to watch an entire season in a single week, but that ended up happening. If you enjoy well-made French crime shows, this is definitely one worth checking out.

Source on TMDB