There's nothing quite like the thrill of attempting to crack the code of an unsolved crime. For the readers who enjoy the nitty, gritty details of true crime, it's time to dip your toe into the scary (but always interesting) pool of true crime stories.Murders are always disturbing, but some are even worse than that. These killings were brutal, almost unimaginable in their depravity. The crimes horrified communities and stumped police - leaving questions that lingered for decades afterward, as years passed without an arrest or even a credible suspect.These cold cases chill us to the bone. It's the curious details of a murder case that transfix true crime obsessives. Some have elements that are particularly violent, bloody, gruesome, and unsettling. Worse, some slaying remain unsolved, meaning that the perpetrator disappeared into the night after the deed was finished. You won't find "classic" unsolved cases here: No Jack the Ripper, no Zodiac, no Black Dahlia. Some of these are the cases you've never heard of.These are in no particular order-they're all equally intriguing in their own ways.