Fushimi learns that there's a mastermind called "Doctor" and finds emails received from Doctor in the phone of Nagashino's brother. Fushimi heads to where those emails came from but gets attacked by Mayumi.
Although Toba denies it, Fushimi is certain that he is Miho's killer. In addition to being certain, Fushimi finds the knife which was used for Miho's death at Toba's clinic. More shockingly, fingerprints of an unexpected person are found on the knife.