Unsolved Mysteries is back with new episodes with more perplexing cold cases and supernatural events. Unsolved Mysteries is from the creators of the original docuseries, Cosgrove 　　Unsolved Mysteries is back with new episodes with more perplexing cold cases and supernatural events. Unsolved Mysteries is from the creators of the original docuseries, Cosgrove/Meurer Productions, and 21 Laps Entertainment, the producers of Stranger Things. 详情