You won't be disappointed!

Such a frustrating disappointment

The film never slows down or bores, plunging from one harrowing sequence to the next.

Through painfully honest and emotional moments, the movie becomes irresistibly relatable

Boris Karloff, Bela Lugosi, and Peter Lorre costar in this horror comedy; the real star is (now forgotten?) band-leader Kay Kyser, who is hired(along with his band) to be the entertainment at a young heiress' birthday party, where she is the object of repeated murder attempts. Could it be the plan of one, if not all of our horror-star trio, or could it be someone else entirely? The star trio are good, especially Karloff, but they are only supporting players; Kay Kyser and his band are the focus here, which is a shame, because their act hasn't aged well, though it isn't too bad, they did fade from popularity into obscurity. This film(on DVD) may now be their only claim to fame...

In the 30's and 40's this kind of spooky whodunit was popular. These films would typically feature things like skeletons on strings, séances, secret passageways and fiends in hooded cloaks. To my memory, "You'll Find Out" seemed to be a quintessential film of that genre (even though it's comedy.)I saw "You'll Find Out" on American Movie Classics many years ago and have wanted to see it again. Does anyone know if this has ever been released on DVD? Looks like it has not. Anyway, if you like this kind of stuff, its is one of the best. You might think its a blast. Or you might think it's goofy garbage.Watch it and "You'll Find Out!"

I see that most of the comments here focus on the movie's cast and genre, while only "A great gimmick in this movie!," 27 March 2003, identifies the special sound effect used, the Sonovox. It's my opinion that the Sonovox is the real "star" of this movie.In brief, the Sonovox involves a source sound (such as a sound effect or musical instrument) fed through a power amplifier into two small sound transducers, like those used for horn loudspeakers that have disk rather than cone diaphragms (constructed like earphones). These transducers are pressed against a performer's throat on each side of the area outside the voice box (larynx). Audio coupled from the drivers into the voice box becomes a substitute for vocal chord stimulation, while the performer silently and carefully forms the usual speaking or singing voiced sounds using only gestures made with the mouth and tongue. An especially high quality Sonovox effect results when a well trained performer additionally speaks the unvoiced fricative components ("s", "t", "sh", etc.). A sensitive microphone closely placed in front of the performer's mouth captures the Sonovox sound for recording.Most of my fondest Sonovox recollections come from the 1940's. A couple of famous examples of the Sonovox technique are found in radio advertising, where an antacid product was proclaimed by a chugging steam locomotive sounding like "Bromo-Seltzer, Btomo- Seltzer ...," and the need to use Lifebouy soap was promoted by a high-tone to low-tone fog horn that belched "Beeeee-Ohhhhh" (for body odor).Perhaps one of the grandest uses of the device is found in the RKO Radio Pictures 1940 movie You'll Find Out. Here the Sonovox produces ghostly sounds such as howling winds that talk, while the Sonovox mechanism is amply (albeit somewhat unrealistically) showcased. But the best part is the concluding musical numbers where Harry Babbitt causes musical instruments "sing" along with Ginny Simms. In the first tune Harry Sonovox's with the saxophone section and muted trumpets to the song "I'd Know You anywhere" (Ginny does this one in a normal fashion midway through the film). The melody then segues into "One Track Mind" sung by Ginny, with Harry adding duet support both naturally and through the Sonovox with the clarinets. This all too brief Sonovox musical segment still runs chills up and down my spine, and is the epitome of Sonovox enhanced entertainment.As can be deduced from the Sonovox operating description given above, producing a Sonovox sound requires specialized equipment generally unavailable to most hobbyists and musicians. However, in the early 1970's Peter Frampton developed a Sonovox like device known as a Talk Box. This much simplified unit involves a single transducer with an flexible plastic tube to transfer electric guitar music to the mouth of the performer. By mouthing the words or other effects, the guitar player emits a Sonovox type sound into a microphone. Talk Boxes may be obtained commercially for between $100-$300. But this isn't the only modern imitation of the Sonovox. The implementation of artificial speech by means of the channel vocoder provides another way for doing the job. Quite a few hardware and software versions of these exist. There is a down-loadable PC program that is quite effective in producing Sonovox sounds and music, and the best thing about it is that it's free.

IMDb lists this film as a Comedy / Horror / Musical / Mystery. While it does have elements of all four genres, none are portrayed very well. The comedy is weak. The horror is almost non-existent. While there are musical numbers, none is very memorable. And the mystery could be solved by a first grader. Sounds pretty bad, huh? With all this having been said, I still enjoy this movie. Why? Boris Karloff, Bela Lugosi, and Peter Lorre make their only joint appearance in a film (that I'm aware of). Each provides a level of excitement and enjoyment to what would otherwise be a very forgettable movie. In the film, they are plotting together to scheme a rich heiress out of her fortune. It's up to Kay Kyser and his band to save the day. The plot involves psychics, poison darts, ghosts, trap doors, and hidden passageways. If you're a fan of Lugosi, Karloff, and Lorre, You'll Find Out can be fun.