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Filmmaker Max Serio gains rare access to Russia's secretive criminal underworld, uncovering a hidden brotherhood bound by loyalty, tradition and a code that refuses to disappear.

Filmmaker Max Serio ventures into Japan's fading Yakuza underworld, uncovering its rituals, tattoos and enduring legacy through former members, experts and rare insight.

Filmmaker Max Serio investigates one of the world's most secretive crime syndicates. Through rare testimony, a hidden world of loyalty, silence and fear is brought into the light.

In Manhattan's Chinatown, Max Serio explores the secretive world of Chinese gangs, revealing how loyalty, belonging and fear fuel a dangerous criminal underworld.