
Hiding a twisted past, a man maintains his facade as the perfect husband to his detective wife — until she begins investigating a series of murders.

When a young boy accuses his father of trying to kill him, Cha Ji-won investigates. An unwelcome reminder of Do Hyeon-su's past walks into his shop.

The police wonder whether they have a copycat killer on their hands when a dead woman is discovered with an unusual injury. Kim Moo-jin remains tied up.

A man is found murdered inside a restaurant. Hyeon-su is caught off-guard when Ji-won and her team show up at Moo-jin's apartment.

Ji-won tracks down Hyeon-su's sister. Hyeon-su and Moo-jin scheme to keep an incriminating photo out of the police's grasp.

Hyeon-su is kidnapped. As the police scramble to catch the taxi driver, Ji-won is horrified to realize that her husband is the victim.

Ji-won begins to question everything she knows about her husband. Meanwhile, Baek Man-u urges Hyeon-su to protect their secrets.

After Moo-jin's claims about Do Min-seok's accomplice go viral, Do Hae-su appears in front of him. Ji-won gets a glimpse into Hyeon-su's past.

Reunited with his sister, Hyeon-su asks whether she remembers the man from their father's funeral. Ji-won eavesdrops on their conversation.

A man's voice on an audio recording triggers Hyeon-su's memories. Ji-won tells Hyeon-su her feelings for him have changed.

Determined to save the trafficked victims and to learn the identity of his father's accomplice, Hyeon-su puts himself at risk with a call to the police.
Created by: Yoo Jung-hee, Kim Cheol-kyu
Available on: tvN