We all love a good unsolved mystery, and we feel a sense of satisfaction if we can put the clues together and reach a theory that makes sense. However, some cases are so cold that it's hard to find any pieces to put together, and all we have to go on are guesses. They're interesting cases, and they're definitely fodder for conspiracy theorists, but you probably won't be seeing a 10-part podcast series on these cases any time soon. From the famous Man in the Iron Mask to the strange story of Kaspar Hauser, let's take a look at some real-life unsolved mysteries that will give you the chills.
