Family: The Unbreakable Bond Season 1 Episode 9

The NIS senior/director calls Dohoon and asks if he found the sniper that killed Butterfly and where that bullet hit her. Director expresses his suspicions about Chief Oh being involved in Butterfly’s murder, while at the NIS headquarters, Ma Youngji tells Chief Oh about Butterfly’s situation and mentions Dohoon was the only agent who was there when Butterfly was killed. It turns out Chief Oh didn’t know Dohoon was the one sent to kill Butterfly.