The investigative documentary series delving deeper into some America's greatest unsolved mysteries, exploring newly discovered evidence and utilizing high-tech tools in reopening each case. From Area 51 to the Salem Witch Trials, each investigation is led by Jennifer Marshall, an accomplished U.S. Navy veteran turned top-notch Private Investigator, as she mobilizes a team to embark on the formidable quest to bring closure to these long-lingering historical puzzles.