In 1782, King Jeong-jo of Joseon asks detective K to investigate a series of murders related to a case of corruption within the government.
You can now watch Detective K: Secret of Virtuous Widow online on the following streaming providers in the United States.
| Writing | Lee Nam-kyu | Screenplay |
| Writing | Lee Choon-hyung | Screenplay |
| Sound | Kim Han-jo | Original Music Composer |
| Crew | 손진성 | Lighting Camera |
| Production | Cho Yoon-jin | Producer |
| Crew | 장남철 | Cinematography |
| Directing | Kim Sok-yun | Director |
| Art | Chae Kyung-sun | Art Direction |
| Production | Kim-Jho Kwang-soo | Executive Producer |
| Costume & Make-Up | Kwon Yoo-jin | Costume Design |
| Sound | Jeong Ji-young | Sound Effects Designer |
| Writing | Kim Tak-hwan | Novel |
| Sound | Na Ho-yeong | Sound |
| Production | Lee Seon-mi | Producer |
