The Secret of the Last Night

Housewife Izumi Mizuno considered her life perfect – a loving husband, two wonderful children, and a cozy home. But everything changed in one night when her son Taiki, a quiet and modest schoolboy, was mistakenly identified as a suspect in a series of murders. Fleeing from the police on his bicycle, the teenager crashed into a truck and died. The mother does not believe in her son's guilt, but what was Taiki doing outside late at night? And why did he start running when he saw the police? Fifteen years later, a young man, Tatsuhiro Momoi, who disappeared under strange circumstances, is suspected of murdering his mistress and is put on the wanted list. Tie, Tatsuhiro’s mother, is convinced of his innocence and, disappointed by her daughter-in-law's indifference, begins her own search. As detectives Mitsuya and Tadokoro advance in their investigation, a key connection between the seemingly unrelated cases is discovered. They must find the answer to the main question: how could the boy's death fifteen years ago have influenced events in the present?