1x11 - A Bona Fide Killer

Dong-jin recalls that Tae-sung's assailant and Kingfisher were in the same building in the past. He immediately proceeds with an interview with the assailant, during which he obtains a clue that Kingfisher might be a woman. Meanwhile, Bo-na catches her mother-in-law's Voice Phishing culprit and receives recognition from her mother-in-law. Although the family becomes harmonious, Tae-sung's anxiety steadily intensifies.