Since the dawn of civilization through modern times, humankind’s capacity for cruelty and darkness has known no bounds. DARK MARVELS is a documentary series that explores the history and engineering behind the world’s most diabolical inventions. From devious torture and death devices, to terrifying weapons of war, sinister spy tools, and games that kill, these are the fascinati...。It's down and dirty time. Splinter is imprisoned. Leo is dying of poison. Don and Usagi are fighting for their lives and the life of the Daimyo against a horde of assassins.。