Who is Cha Soo-hyun in Signal?

Detective who leads the newly formed cold case team. She has spent 15 years searching for Jae-han, who is her long-lost mentor and unrequited love.

Who plays Cha Soo-hyun in Signal?

Cha Soo-hyun is played by Kim Hye-soo.

Cha Soo-hyun has 7 mapped relationships in Signal. Explore the interactive relationship map for details.

Cha Soo-hyun — Professional Mentor — Lee Jae-han (Cho Jin-woong)
Jae-han was Soo-hyun's mentor before his disappearance
Cha Soo-hyun — Professional Team Leader — Park Hae-young (Lee Je-hoon)
Soo-hyun leads Hae-young in the cold case team
Cha Soo-hyun — Alliance Team Member — Kim Gye-chul (Kim Won-hae)
Work together on the cold case team
Cha Soo-hyun — Professional Team Leader — Park Hae-young (Lee Je-hoon)
Work together on the cold case team
Cha Soo-hyun — Conflict Enemy — Kim Bum-joo (Jang Hyun-sung)
Soo-hyun's search for Jae-han puts her in conflict with Bum-joo
Cha Soo-hyun — Professional Colleague — Ahn Chi-soo (Jung Hae-kyun)
Work together in the police force
Cha Soo-hyun — Conflict Antagonist — Hwang Ui-kyung (Kim Min-gue)
Connected to the crimes and Jae-han's disappearance