“The Crimson Rivers” tells of two French detectives on converging investigative paths leading to the “who” in whodunit as they leapfrog from one tense moment to the next in this good but not great macabre and sometimes gruesome serial killer mystery. What this flick lacks in story it more than makes up for in artistry and verve as it carves itself out of hauntingly beautiful vistas, superb cinematography, great sound and score, and, perhaps best of all for English speakers, excellent dubbed translations. Well worth the time for those with an eye for artistry in film and a taste for dark thrillers.