A probing Discovery Channel documentary which points out the mysterious symbols all across Washington D.C., first brought to light in Dan Brown's novel and made more popular by the Robert Langdon thriller, the Lost Symbol. Blending on-location footage with a series of dramatic re-creations of historical events, you get a pulse-pounding exploration as experts search for their possible meanings and explanations. 2009/color/173 min/NR/fullscreen.