Who Killed Who?

Who Killed Who? is the first segment of the fourth episode of the first season of The Grim Adventures of Billy & Mandy. It originally aired on Cartoon Network on July 4, 2003. Betty White guest starred as Mrs. Doolin in the episode.
== Plot ==
Coming soon!
== Characters ==
* Grim
* Billy
* Mandy
* Irwin
* Mrs. Doolin (debut)
* Lucky (debut)
* Little Frankie (debut)
== Locations ==
* Mrs. Doolin's house
* Billy's house
== Trivia ==
* There are some fan theories that suggest that Mrs. Doolin herself is Mandy in the future.
* This is Mrs. Doolin's only appearance in the franchise so far.
* Besides The Grim Adventures of Billy & Mandy, Betty White also played an animated version of herself on The Simpsons and guest starred as an elderly fish in an episode of SpongeBob SquarePants.
* Irwin appears in both this episode and its sister episode Tween Wolf.
* This is the only season 1 episode to be 14 minutes long.
Category:Episodes
Category:The Grim Adventures of Billy & Mandy Episodes
Category:Season 1 episodes
Category:Episodes focusing on Mandy
Category:Season 1
Category:The Grim Adventures of Billy & Mandy episodes
Category:Episodes focusing on Billy
Category:Episodes with good endings
Category:Episodes with nightmare fuel