Park Hae-young is a sharp, somewhat jaded criminal profiler in the present day whose interest in police work is rooted in a painful childhood experience with an unsolved case. He is intelligent and observant but initially skeptical and detached, more inclined to point out the failures of the system than to invest himself emotionally in the people it has failed.
Everything shifts when he finds an old walkie-talkie that crackles to life and connects him to a detective broadcasting from 1989. As he begins exchanging information across time with Lee Jae-han, Hae-young is drawn into reopening cold cases and confronting how the past shaped his own life, including events tied to his family.
Over the series, Hae-young grows from a guarded outsider into a committed member of the cold-case team. Working with Cha Soo-hyun in the present and Lee Jae-han across the radio, he comes to believe that justice delayed is still worth pursuing, even when altering the past carries unpredictable consequences for the present.
Park Hae-young is one of the central figures in Signal, a crime/thriller/mystery/korean/procedural/fantasy series that aired on tvN from 2016. Within the narrative of Signal, Park Hae-young serves as a pivotal character whose decisions and relationships drive key story arcs throughout Season 1 (2016). The character's journey has been central to many of the show's most memorable and discussed moments.
Portrayed by Lee Je-hoon, Park Hae-young has become one of the most recognizable characters in modern television. Lee Je-hoon's performance brings nuance and depth to the role, creating a character that resonates with audiences on both intellectual and emotional levels. Lee Je-hoon's work has been recognized with 1 major award, reflecting the critical acclaim their portrayal has received.
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? Frequently Asked Questions
Park Hae-young is played by South Korean actor Lee Je-hoon, who portrays the present-day criminal profiler at the center of the series.
Hae-young is a profiler who discovers a walkie-talkie that connects him to a detective in 1989, allowing him to help reopen and investigate long-unsolved cold cases from the present.
