Character Relationship Map: Doubt

Characters

• Jang Tae-su (played by Han Suk-kyu) — protagonist
• Jang Ha-bin (played by Chae Won-been) — protagonist
• Koo Dae-hong (played by Roh Jae-won) — supporting
• Oh Jeong-hwan (played by Yoon Kyung-ho) — minor
• Choi Young-min (played by Kim Jeong-jin) — minor
• Park Joon-tae (played by You Eui-tae) — minor
• Jeong Doo-cheol (played by Yu Oh-seong) — cameo

Key Relationships

• Jang Tae-su → Jeong Doo-cheol (Professional Mentor)
• Jang Tae-su → Park Joon-tae (Professional Colleague)
• Jang Tae-su → Choi Young-min (Professional Colleague)
• Jang Tae-su → Oh Jeong-hwan (Professional Superior)
• Jang Tae-su → Koo Dae-hong (Professional Colleague)
• Jang Tae-su → Jang Ha-bin (Family Father)

Story Analysis

A criminal profiler's investigation into a murder case reveals disturbing connections to his own family's dark secrets.

Plot Progression

1. The Family Secret
2. The Investigation
3. The Moral Crossroads