His second film of 1949, also produced by Film Art Association and released by Shintoho, was "Stray Dog". It is a detective movie (perhaps the first important Japanese film in that genre) that explores the mood of Japan during its painful postwar recovery through the story of a young detective, played by Mifune, and his fixation on the recovery of his handgun, which was stolen by a penniless war veteran who proceeds to use it to rob and murder. Adapted from an unpublished novel by Kurosawa in the style of a favorite writer of his, Georges Simenon, it was the director's first collaboration with screenwriter Ryuzo Kikushima, who would later help to script eight other Kurosawa films. A famous, virtually wordless sequence, lasting over eight minutes, shows the detective, disguised as an impoverished veteran, wandering the streets in search of the gun thief; it employed actual documentary footage of war-ravaged Tokyo neighborhoods shot by Kurosawa's friend, Ishirō Honda, the future director of "Godzilla". The film is considered a precursor to the contemporary police procedural and buddy cop film genres.