Overview
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.
Seasons & Episodes
Miniseries
Key Information
Watch Trailer
Cast & Crew
Mark Ruffalo
Dominick Birdsey / Thomas Birdsey
Melissa Leo
Concettina Ipolita Tempesta 'Ma' Birdsey
Rosie O'Donnell
Lisa Sheffer
Archie Panjabi
Dr. Patel
Kathryn Hahn
Dessa Constantine
John Procaccino
Ray Birdsey
Rob Huebel
Leo
Michael Greyeyes
Ralph Drinkwater
Gabe Fazio
Shawn Tudesco / Dominick and Thomas Acting Double
Rocco Masihi
Young Thomas Birdsey
Donnie Masihi
Young Dominick Birdsey
Laura Esterman
Ruth Hood
Photos
Frequently Asked Questions
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.
I Know This Much Is True has 1 season with 6 episodes.
I Know This Much Is True premiered on May 9, 2020.
No, I Know This Much Is True has ended. The final episode aired on June 13, 2020.
I Know This Much Is True originally aired on HBO. Check your local streaming services for availability.
I Know This Much Is True was created by Derek Cianfrance.
I Know This Much Is True has a rating of 7.6/10 based on user reviews.
I Know This Much Is True is classified as Drama.