

7.575 minSeason 1 • Episode 10
LatestThe 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?
A criminal profiler begins questioning everything he’s ever believed about seeking justice after learning his daughter is linked to a murder case.
Acting
Han Suk-kyu's trembling restraint will wreck you
Writing
Every episode adds another impossible layer to his dilemma
Direction
Song Yeon-hwa weaponizes silence and hallway conversations
Creator
Song Yeon-hwa
Trivia, insights & behind the scenes
The title 'Doubt' refers to both Tae-su's professional methodology and his crumbling certainty about his own family—rare Korean drama where Korean police procedural tropes get emotionally weaponized.
Han Suk-kyu reportedly requested multiple script revisions to ensure Tae-su's despair felt earned rather than melodramatic—his 40-year career peak performance according to Korean critics.