Who Killed Who? is one of the early
Tex Avery MGM Cartoons, created in
1943. The short is a ruthless parody of whodunit cases.
Beginning with an announcer proclaiming the cartoon as an educational example of how crime doesn't pay, it is set in an old, spooky house on the "Gruesome Gables". The elderly owner is murdered and, seconds later, a crafty detective arrives to investigate—but he finds out that the house is a haunted and wacky place, where finding and unmasking the murderer might prove very problematic.
The cartoon short provides examples of: