The Ravine of Goodbye (movie, 2013)

In a valley, with a dense growth of trees, a baby is killed. The baby's mother Satomi is arrested as the prime suspect. The police also learn that Satomi is involved in a romantic relationship with her next door neighbor Ozaki. The information was provided by the neighbor's lover Kanako. Meanwhile, magazine reporter Watanabe, who is covering the story, discovers the shocking fact that Ozaki was involved in a rape case 15 years ago. Even more shocking, the victim in the rape case is Kanako.