Two soda jerks desperate to break into radio to have their murder mysteries produced end up investigating the real deal in this amusing slapstick comedy that is one of Abbott and Costello's funniest. Filled with gag after gag and some great comedy performances, this jump into slapstick from the start and never lets go. Lou's getting hoodwinked by a juvenile telegram boy, first losing five cents and a bunch of glasses of orange juice, and later tickets to a radio show he believed were for a previous performance, as well as falling for the old two dimes for a nickel gag. More comedy is provided by a young Mary Wickes as the radio station secretary, and there are also amusing gags involving various takes on the old "Who on First?", including one where Lou wins a radio, turns it on and hears the real Abbott and Costello doing the routine, and being turned off by having to hear this again over and over again. Unlike other Abbott and Costello movies, this one doesn't have any musical numbers, but it focuses more on plot for a change and that makes it a bit better than some of the musical comedies they had done up to that time.

Abbott and Costello are still in top form in this film. This is the second of their films that could be considered a horror spoof, but it's really more of a mystery. However, being made at the monster factory that was Universal(also responsible for the Basil Rathbone Sherlock Holmes films), this one passes with flying colors. There are no musical numbers in this one, which leaves more time for Abbott and Costello to do their routines, and the ones they do are done with excellent timing. In fact, some of these are the best versions of the routines. Also, the love interest plot involved in the story actually isn't so bad, and fits in with the rest of the film quite well. If you want to watch an Abbott and Costello film where you don't have to forward through songs ever five to ten minutes(unless you like those), then this one should be on your list for sure.

Man, nothing was sacred to Abbott and Costello! In the wacky "Who Done It?", they play soda jerks who pitch an idea to a radio station, and then find themselves in the middle of a murder case! This of course is an excuse for a series of hilarious gags (namely Alexander 2222 and the ledge of the building).One of the things that I liked about this movie is that it's not a musical. I'm just not into musicals. When I watch a comedy, I expect to laugh, and musical numbers cut into that. Here, just get to see Bud and Lou do their stuff. And some funny stuff it is. They must have had fun making it. Really funny!

This Abbott and Costello spoof of whodunits contains some laugh-out-loud moments ("I was holding the gun backwards!"), but IMO would have been even funnier if it had focused more on the "A & C posing as detectives" idea: the scene where they "interrogate" the suspects ("what kind of murder is this without a butler?") is possibly the highlight of the film and predates by decades similar scenes in the "Pink Panther" sequels. But the rest of the movie has the boys mostly trying to evade the real policemen rather than investigating the crime(s). Luckily, "Who Done It?" is not just a succession of comic routines - it also has a functional mystery plot and a well-done climactic set piece with Bud and Lou trapped alone with the killer on the roof of a skyscraper. (**1/2)