S1, E5: Secrets and lies unravel four women should’ve hidden them better. Se-yeon discovers Sang-hoon’s diary and starts to doubt his identity. Jeong-won receives dashcam footage exposing her affair with Min-kyu. As Eun-soo digs into Min-jae’s case, she’s haunted by signs of another woman. Meanwhile, Hwa-young hears something shocking on a secret date with Tae-oh.