Close Advertising Unsolved Mysteries with Robert Stack – Season 12, Episode 9 – Full Episode This episode includes: Canadian Crop Circles, Heads Up, Unlucky Thirteen & UD and Lone Lopez & UD. Crop Circles Classic Television FilmRise Free Full Episode full episodes official Robert Stack Television tv Unscripted Unsolved Mysteries Unsolved Mysteries with Robert Stack 47073 views 1033 / 25