| Episode cast overview: | |||
| Dan Castellaneta | ... | Homer Simpson / Barney Gumble / Krusty the Klown / Groundskeeper Willie / Mayor Quimby / Kodos / Others (voice) (as Diabolical Dan Castellaneta) | |
| Julie Kavner | ... | Marge Simpson (voice) (as Ghoulie Julie Kavner) | |
| Nancy Cartwright | ... | Bart Simpson / Kearney / Others (voice) (as Nefarious Nancy Cartwright) | |
| Yeardley Smith | ... | Lisa Simpson (voice) (as Yowling Yeardley Smith) | |
| Hank Azaria | ... | Moe Szyslak / Apu / Lou / Others (voice) (as Hellacious Hank Azaria) | |
| Harry Shearer | ... | Montgomery Burns / Waylon Smithers / Ned Flanders / Kent Brockman / Principal Skinner / Otto / Kang / Jasper / Eddie / Dr. Marvin Monroe / Others (voice) (as Howlific Harry Shearer) | |
| Maggie Roswell | ... | Helen Lovejoy / Others (voice) (as Mummified Maggie Roswell) | |
| Marcia Wallace | ... | Edna Krabappel / Others (voice) (as Macabre Marcia Wallace) | |
The Simpsons go to a market sale and receive a severed monkey's paw which can grant five wishes. Bart has magic powers so he can turn people into anything he wants if they be naughty to him and he turns Homer into a Jack-in-the-box. Mr Burns' puts Homer's brain into a robot.
Really scary!! This is up on my lists of best Treehouse of Horror episodes! Scary and good and funny!!