Heart of Glass -Herz aus Glas

In a period of transition from an ancient to a modern era, the prophet Hias, who sees future images of the forthcoming end of the world, foretells the people of a forest town in Bavaria of a fire in the glass blowing factory, source of prosperity for the whole town. In reality, work at the factory has been halted because Muhlbeck, who invented the formula for ruby glass, died and took his secret with him to the grave. The factory owner is in despair; convinced that the secret ingredient in the formula is human blood, he kills the maid Ludmilla. Meanwhile, collective hysteria breaks loose in the town, as Hias continues to augur death and destruction. One evening, the glass factory is set ablaze by the owner himself, who is then locked up in a cell where Hias has also been taken, as he is guilty of having predicted the future.