Detective K: Secret of Virtuous Widow There Is No Perfect Murder. 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. Details Casts Videos Galleries Posters Title Detective K: Secret of Virtuous Widow Release Date 2011-01-27 Runtime 01 Hours 55 Minutes Genres Mystery Action History Adventure Comedy Crime Production Companies Generation Blue Films, WithUs Films, Showbox Production Countries South Korea Kim Myung-min... Kim Min... Oh Dal-su... Han Seo-pil... Han Ji-min... Han Gaek-joo... Lee Jae-yong... Minister Lim... Woo Hyeon... Mr. Bang... Ye Su-jeong... Lim Jwa-soo's Wife... Jeong In-gi... Magistrate... Nam Sung-jin... King Jeong-jo... Kim Tae-hun... Im Geo-seon... Kim Do-yoon... Policeman 2... Choi Moo-seong... Court Priest... Yang Han-yeol... Boy... Detective K (2011) Teaser (English subs) (Trailer) Original Size (2000x1125) Original Size (1900x2850) Original Size (900x1288) Original Size (1000x1500) Original Size (1497x2175) Original Size (1200x1800)