Duck-tective is a show that Mabel and Dipper watch at the beginning of "Headhunters." It is a TV show involving a crime-solving sleuth duck, very similar to Sherlock Holmes. The titular duck speaks only through a series of quacks which are translated in the subtitles, though the policeman that he is speaking to seems capable of understanding him at certain points.
Once Duck-tective solves the murder the Constable comments that he's "Really quacked the case". Duck-tective replies with a quack which appears as a subtitle at the bottom translating to "Don't patronize me."
Stan Pines watches it later and calls the duck stupid, despite Duck-tective having just solved the case of the murder. The policeman is heard in "Little Dipper," telling the duck that he's gone too far this time. Mabel thinks of the duck as a genius, whereas Dipper feels he could outwit the Duck-tective and that it's easier for the duck because it's closer to the ground.
In "Mabel's Scrapbook: Heist Movie," it seems the series adapted into a 3D-stereoscopic live-action film, as a poster at the local cinema reads "Duck-Tective 3D".
In "Dungeons, Dungeons, and More Dungeons," it is revealed in the show's season finale that Duck-tective has a twin, who had shot him earlier.
- In the golf war, a Duck that looks like Duck-tective is seen eating a Lilputian.
- 12. "Fixin' It with Soos: Golf Cart" (pictured)
- 15. "TV Shorts 2"
- 16. "Mabel's Scrapbook: Heist Movie" (pictured)
- 203. "The Golf War"
- 205. "Soos and the Real Girl" (pictured)
- 213. "Dungeons, Dungeons, and More Dungeons"
- PinesQuest (pictured)
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