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We couldn’t find any streaming options in Ireland, but Underbelly - Season 4 is available in the United States and 3 other countries on Amazon Prime Video, Amazon Prime Video with Ads, and 2 other services.
This series details real events that occurred in Sydney between 1927 and 1936. The series depicts the "razor gangs" who controlled the city's underworld during the era and the violent war between the two "vice queen" powers, Tilly Devine and Kate Leigh.
