| "The Great Louse Detective" | |
|---|---|
| The Simpsons episode | |
| Episode no. | Season 14 Episode 6 |
| Directed by | Steven Dean Moore |
| Written by | John Frink and Don Payne |
| Production code | EABF01 |
| Original air date | December 15, 2002 |
| Guest appearance | |
| Kelsey Grammer as Sideshow Bob | |
| Episode features | |
| Couch gag | When Homer uses the remote, the family travels back in time to the prehistoric era and the Roman times. |
| Commentary | Matt Groening Al Jean John Frink Ian Maxtone-Graham Matt Selman Tim Long Michael Price Tom Gammill Dan Castellaneta Steven Dean Moore Mike B. Anderson David Silverman |
"The Great Louse Detective" is the sixth episode of the fourteenth season of the American animated television series The Simpsons. It originally aired on the Fox network in the United States on December 15, 2002. In the episode, the Simpson family wins a free spa weekend, and Homer is nearly killed when a mysterious figure locks him in a sauna. Chief Wiggum decides to hire someone who can think like a murderer in order to find the mystery assailant. Bart's arch-enemy Sideshow Bob is sent to live with the Simpsons so he can help find Homer's attempted killer, who turns out to be the son of the late Frank Grimes.
Since airing, the episode has received generally positive reviews from critics. The episode's title is a reference to the 1986 Disney animated feature The Great Mouse Detective.