Hellgate: London (DVD9)

London, 2038. According to legend, when the ravens depart the Tower of
London, it will crumble to rubble and disaster will befall England.
As man became more dependent on science, believing only in what he
could define or create, ancient knowledge and rituals were lost to
the antiquity of time. Prophecies that had stood as warning for untold
generations were seen as archaic folly or ignorant superstition. So,
when the harbingers of evil began to manifest, few saw and fewer
believed. When the demons finally came, there was little that stood in
their way.