A live-action host (Robert Emmett O'Connor) opens with a disclaimer about the nature of the cartoon, namely, that the short is meant to "prove beyond the shadow of a doubt that crime does not pay" (a direct reference to MGM's concurrent "Crime Does Not Pay" short subject series, which also opened with an actor pretending to be a law enforcement officer).

The story begins on a dark and stormy night as the victim (voiced by Kent Rogers doing an impression of Richard Haydn), presumably the master of the very large "Gruesome Gables" mansion, is reading a book based on the cartoon in which he appears. Frightened, he muses that, according to the book, he is about to be "bumped off". Someone throws a dagger with a letter attached, telling the master that he will die at 11:30. When he objects, another letter informs him that the time has been moved to midnight.

Just then the clock began to tick all the way to midnight (while the ringing play the notes of the funeral march) as a skeleton bird appears and explain that the gun shot will announce it to be 12:00 a.m, as a gun (which is revealed to be a large gun that the killer had to use two hands to handle it) appears and the killer shot the victim, who after being shot stopped himself and place a matress on the floor but only to fall the other way and died as a sheet appeared out of nowhere and covered the victim.

Just then The Detective arrived and told everybody to stay where they are (including a man who left his sit as the detective whack him on the head) and began to investigate the body. First he tries to take a picture of the decease, only for him to be brought back to life and pose for the photo as he became dead again, which surprise the detective as he looked under the sheet only for the victim to come back again and told him not to be nosy and return to be dead again.

True to form, on the final stroke of midnight a mysterious killer in a heavy black cloak and hood shoots him dead with a rather large pistol (how dead he is, though, is a matter of question), and a police detective (voiced by Billy Bletcher, modeled on characters portrayed in film by Fred Kelsey) and demanding to know "Who done it?!", immediately begins to investigate. After checking out the premises and the suspicious "red herring" servants, the officer gives a lengthy chase of the real killer.

The mansion is filled with surreal pitfalls, strange characters—including a red skeleton (a parody of Red Skelton) and a ghost that is terrified of mice—and booby traps that slow and obstruct the detective. Behind a closed door marked "Do Not Open Until Xmas", he finds an angry Santa Claus. The detective eventually traps the killer and unmasks him, revealing him to be the opening-sequence host, who confesses "I dood it"—one of Skelton's catchphrases—before bursting out crying.

Voice cast edit

• Billy Bletcher as Police Officer, Ghost (uncredited)
• Sara Berner as Cuckoo Clock Bird, Maid (uncredited)
• Kent Rogers as victim with an impression of Richard Haydn, Red Skeleton, Falling Body, and Santa Claus (uncredited)^[3]

Live-action cast edit

• Robert Emmett O'Connor as Host (uncredited)

• Tex Avery Screwball Classics: Volume 1 Blu-Ray (restored)^[4][5]

• Who Killed Who? at IMDb