Heaven and Hell: Soul Exchange

Episode 6 (1x6)

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Suspecting an old love letter in Haruto’s possession holds a clue to solving the case, Ayako investigates his past to find out who sent it. Meanwhile, Hideo is approached by a man arrested for gambling who wants to make a plea bargain in exchange for information. According to him, the timings of the murders all share something in common. But when will the killer strike again?