Mysteries of the Abandoned

The True Cross (10x5)

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In a California desert, a once glittering Hollywood hotspot gets converted into a top-secret interrogation center for POWs; before being shuttered, this high-tech facility gathered reams of valuable wartime intelligence... Stories: 1) Byron Hot Springs Hotel, Contra Costa County, CA; 2) Slains Castle, Scotland; 3) Viivikonna, Estonia; 4) Ani Ruins, Turkey-Armenia Border