This is the original Argentinian version (recently remade with the same title sans the initial article). It shifts back and forth between the present and past as a Buenos Ares ex-investigator probes an old rape-murder that was solved but never fully resolved. (I won’t say more than that about the plot.) Because it’s a procedural, the pace is, shall we say, deliberate. But you don’t mind because the performances and direction are so on the mark. A good story, well told, with a wrenching denouement.