TV SERIES
I Know This Much Is True
Drama
The parallel lives of identical twin brothers Dominick and Thomas Birdsey in an epic story of betrayal, sacrifice and forgiveness set against the backdrop of 20th century America.
Top cast
Mark RuffaloDominick Birdsey / Thomas Birdsey
Melissa LeoConcettina Ipolita Tempesta 'Ma' Birdsey
Rosie O'DonnellLisa Sheffer
Archie PanjabiDr. Patel
Kathryn HahnDessa Constantine
John ProcaccinoRay Birdsey
Rob HuebelLeo
Michael GreyeyesRalph Drinkwater
Gabe FazioShawn Tudesco / Dominick and Thomas Acting Double
Where to watch
Netflix
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Amazon Prime Video
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Shahid
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Watch It
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TOD
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Disney+
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Apple TV+
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Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 12 Jul 2026.