Here's a film with a good premise – an heiress has been threatened and plans to spend the weekend hosting her 21st birthday at the family's gloomy old mansion. Among the suspicious cast of characters are Boris Karloff, Bela Lugosi, and Peter Lorre. That' s the good news. Now, here's the bad news. The star is Kay Kyser. Yes, Kay is asked by his business manager (Dennis O'Keefe) to supply the entertainment at said birthday party. Janis Bellacrest (Helen Parrish) is the business manager's fiancé. Karloff, Lorre and Lugosi are pretty much wasted as the villains, although, Thank Goodness, none of them serves as a "red herring." Good only for fans of the villainous trio and any hardcore Kay Kyser fans (if there are any). Kyser does five numbers in the movie, thus validating the need for a fast-forward button.

You'll Find Out (1940) ** 1/2 (out of 4) Kay Kyser and his band are paid to perform at a birthday party but they are stalked by Boris Karloff, Bela Lugosi and Peter Lorre. The horror, comedy and musical genres are all mixed together in this decent film that turned out to be a lot better than I was expecting. I had put off viewing this for years because I had heard that Lugosi and Karloff didn't share any scenes together but that turned out to be false because they are together in at least three scenes. Lorre and Lugosi steal the show with some nice comic touches. The film goes on a bit too long at 97 minutes but fans of the three should enjoy themselves.

Love the movie, Love the music. Ish, Harry, Ginny, Sulley and of course Kay are wonderful. Wish this movie would play more. The Horror Legends Bela Lugosi, Boris Karloff, Peter Lorre naturally make this film have the spooky theme to it. Ish and his puppy lighten the mood. The comedy relief of this film is wonderful. It, as with other Kay Kyser movies, are a 10+. The music is light hearted and catchy. I would certainly recommend this movie to anyone and everyone who wish to enjoy the music from a great Big Band that incorporates the eery-ness from Bela Lugosi, Boris Karloff and Peter Lorre. Every time I see this movie, I always see something new that I hadn't seen before.

YOU'LL FIND OUT is strictly a product of the '40s, when a mixture of comedy and horror was standard fare for a Saturday afternoon at the movies. Usually this sort of dark house comedy was left to Abbott and Costello but this time it's band leader Kay Kyser, who was a sort of Spike Jones of his day.It's a gimmicky sort of dark house mystery where most of the action takes place in a "haunted" mansion full of secret panels and passageways, all scary enough to provide the setting for a story about a trio of gangsters (BELA LUGOSI, PETER LORRE and BORIS KARLOFF) scheming to murder a young woman (Helen Parrish) for her father's inheritance, by holding a seance at which her father will appear and frighten her to death--or so they hope.The comedy provided by Kyser and his band (especially Ish Kabibble) is extremely corny and some of the one-liners are creaky enough to turn off the chills, but it's all done in such an innocently good-natured way that it comes off as harmless fun, if only mildly entertaining.David Butler (who co-wrote, produced and directed) obviously had a good time putting this one together. The grand old mansion is a fabulous setting for the scary scenes, there's plenty of thunder and lightning to keep the atmosphere loaded, and all of the performers do their best to keep things spinning along.Handsome DENNIS O'KEEFE shows a good flair for comedy, even if his material is on the weak side, and GINNY SIMMS proves that she was a pleasing enough pop singer with a really good voice and personality.But it's a hit-and-miss sort of film, funny in spots, scary in others, but as cliché-ridden as the old dark house comedies come. Oddly enough, despite the presence of Karloff, Lorre and Lugosi, the creepiest performance in the film is given by ALMA KRUGER as an old gal who likes to communicate with the dead, all the while viewing everyone with an icy stare.