365: Repeat the Year S01E17 - Episode 17

While Hyeong Ju is acting suspiciously for some reason, a voice recording is delivered to Seoul Makang Police Station as well as to Mr. Hwang and Ga Hyeon. This triggers Ga Hyeon to investigate the voice recording, and she eventually concludes that Hyeong Ju could actually be the culprit. However, her speculation is proven wrong when she faces a threat from the real culprit.