Homer has to use Sideshow Bob in order to track down a potential assassin.



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Episode cast overview:
Homer Simpson / Krusty the Klown / Groundskeeper Willie / Pop / Drunk #1 (voice)
Lisa Simpson (voice)
Cat in the Hat / Turtle Masseur / Yoga Instructor / Chief Wiggum / Lou / Decapitating Harry / Palm Reader / Apu Nahasapeemapetilon / Cletus / Frank Grimes, Jr. / Moe Szyslak / Carl / Jester / Drunk #2 / Duffman / Frank Grimes, Sr. (voice)
Sideshow Bob (voice)
Masseuse (voice)
Beautician / Son / Aunt Gladys (voice)
Karl Wiedergott ...
Various (voice)
Additional Vocals


A mystery assassin is out to kill Homer and,after several attempts,he consults Sideshow Bob who,as a would-be killer,understands the mind of a murderer and comes to stay with the Simpsons to expose the killer. After Homer is named Mardi Gras King and rides on a float his would-be murderer is exposed,as Junior,the son of Frank Grimes,the nuclear power plant employee for whose death Junior blames Homer. After Junior's arrest Bob resists the opportunity to kill a sleeping Bart as he is now so accustomed to him. Written by don @ minifie-1

Plot Summary | Add Synopsis


Animation | Comedy


TV-PG | See all certifications »




Release Date:

15 December 2002 (USA)  »

Filming Locations:

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:


(some sequences)|

Aspect Ratio:

1.33 : 1
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Did You Know?


When Frank Grimes, Jr. is running away on stilts his Mardi Gras cape falls off; in the next shot it is back, but is gone again immediately after. See more »


Moe: [after beating up a Homer dummy] Who's the sociopath, now?
See more »


References The Great Mouse Detective (1986) See more »


The Very Reason That I Live
Music by Alf Clausen
Lyrics by John Frink and Don Payne
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User Reviews

Good One! (Spoilers)
6 April 2009 | by (United States) – See all my reviews

In The Great Louse Detective the first time that they permanently used computer animation rather than hand drawn is a good way to start. Sideshow Bob episode have never failed me yet. The main plot of the episode is that the Simpsons go to the Spa but while they are at the Spa someone tries to kill Homer by locking him in a incredibly hot steam room. Chief Wiggum decides to release Sideshow believing the best way to catch is a criminal is by using one. Homer learns that he is to become the king of Springfield Mardi Gras. At the parade Bob learns that Homer's engine is having a problem because of the repair of the mechanic. He draws a correlation between the wrench that was used to lock Homer in the steam room. Bob and Homer chase the killer when they learn it is Homer's Mechanic Junior. He admits that his name is Frank Grimes Jr. The police arrive and Frank Grimes is arrested. Later that night Homer puts Bart to bed but the minute he closes the door Bob is hanging to the back of the door. He is about to kill Bart when he finds he cannot because he has grown accustomed to his face. Bart watches as he leaves out of the window and Bob is electrocuted by two birds who play the remote on there nest. I just love how Bart wont stop shocking him in one part. I thought the whole Frank Grimes Jr. thing was pretty obvious for the most part. Overall good.

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