"Wait, there's more," cautions a character in this French mystery (2006) after peeling away numerous layers of intrigue—and he's not kidding. Following a family gathering, a pediatrician (Francois Cluzet) and his wife (Marie-Josee Croze) stop by their favorite lake for some nocturnal skinny-dipping, but their idyll ends with the wife murdered and the husband beaten and baffled about what transpired in the darkness. Eight years later the cops have pinned the crime on a serial killer but still suspect the husband, who's pulled back into the past by a cryptic e-mail indicating his wife is still alive. Cluzet's brooding performance propels the movie, and writer-director Guillaume Canet, best known here for his own acting work in Joyeux Noel and Love Me if You Dare, skillfully orchestrates the cascading revelations. With Andre Dussollier, Nathalie Baye, and Kristin Scott Thomas. In French with subtitles.