High Quality Content by WIKIPEDIA articles! Ancient Mysteries is a documentary television series that was produced by FilmRoos and originally broadcast on A E from January 7, 1994 until May 3, 1998 with reruns airing until 2000. Reruns were also re-broadcast on The Biography Channel during the 2000s. The series deals with historical mysteries and is mostly hosted by Leonard Nimoy (unless otherwise noted), which recalls the late-1970s TV Series In Search Of....