Where to watch Secret in the US
Secret isn't currently available on any subscription platform in the US.
Availability updated November 4, 2026.
Secret plot
A man in his 50's is found brutally murdered at a construction site. His name is Kim Chul-Joo (Kim Jun-Bae). The detective believes he was murdered by someone who knew him in the past. His young Vietnamese wife, Thuy Nguyen (Seo Eun-A), is arrested.
