She Knows Everything - Season 1 Episode 5 Brotherhood
Overview: Miss Lee fills in Tae Hwa on why Su Jin had a relationship with Lee Myung Won. And after seeing and hearing Myung Won and Ho Chul's conversation on a home CCTV recording no one knew about, they now know that Myung Won and Ho Chul are related. Later, Miss Lee uses the home security recording to set things straight with Ho Chul.