Watch Trailer
DISCLAIMER: Not all titles shown are currently available on all streaming providers.

Watch History's Greatest Mysteries Season 3 Episode 6 Online

  • 7.4/10
  • COUNTRIES: United States of America
  • Subtitles: English

It's a treasure coveted by everyone from Roman Emperors to Adolf Hitler--a sacred object said to hold incredible powers of healing, resurrection and immortality. It may be the world's most sought-after relic, but what is the Holy Grail? And if it exists, can it ever be found?