Doubt

Tae-su wants to trust his daughter, but all evidence points to Ha-bin. He draws suspicion from Officer Dae-hong, who begins investigating the case.

After Tae-su submits a keychain as evidence, the police discover a link to another case. Yeong-min is brought in for questioning once more.

While Dae-hong is disappointed with the changes in Tae-su, Eo-jin learns about her colleague’s past. Ha-bin reaches a breaking point with Yeong-min.

A mysterious envelope arrives at the police station. Ducheol blackmails Taesoo using Habin. Habin learns the secret behind Jisus death, while Eojin firmly suspects Habin as the killer.

The true killer is revealed, but the motive behind the murder remains unclear. Habin refuses to let go of the intent to kill, leaving Taesoo with deep guilt. Can this father-daughter duo live a normal life from now on?