I Know This Much Is True One (Season 1, Episode 1)
TV-MA
TV Episode | 60 min | Drama

I Know This Much Is True

One (Season 1, Episode 1)

TV-MA

TV Episode | 60 min | Drama

After paranoid schizophrenic Thomas Birdsey has a violent public breakdown, Dominick Birdsey finds himself stepping up to defend his identical twin brother in unexpected ways.

Showrunner

Derek Cianfrance

Director

Derek Cianfrance

Writers

Wally Lamb (based on the novel by) | Derek Cianfrance (written for television by)

Producers

Derek Cianfrance | Judith Regan

Composer

Harold Budd (music by)

Cinematographer

Jody Lee Lipes

Editors

Jim Helton | Malcolm Jamieson | Nico Leunen | Dean Palisch | Ron Patane

Casting Director

Bonnie Timmermann

Production Designer

Inbal Weinberg

See all filmmakers & crew (341)

Edit Released

Updated Apr 28, 2020

Release date

May 10, 2020 (United States)

Awards

Series awards

Won 1 Primetime Emmy Award. Another 4 wins & 7 nominations

Contacts

+ Add

Become a member to see contact information for One.

Cast	+ Add Cast
32 cast members

Name	Known for
Mark Ruffalo Dominick Birdsey / Thomas Birdsey Dominick Birdsey / Thomas Birdsey See fewer	Spotlight (I) (2015)
Melissa Leo Ma Ma See fewer	The Fighter (I) (2010)
John Procaccino Ray Birdsey Ray Birdsey See fewer	A Most Violent Year (2014)
Rob Huebel Leo Leo See fewer	The Descendants (2011)
Michael Greyeyes Ralph Drinkwater Ralph Drinkwater See fewer	Wild Indian (2021)
Gabe Fazio Shawn Tudesco Shawn Tudesco See fewer	The Good Nurse (2022)
Juliette Lewis Nedra Frank Nedra Frank See fewer	August: Osage County (2013)
Kathryn Hahn Dessa Constantine Dessa Constantine See fewer	Afternoon Delight (2013)
Guillermo Diaz Sergeant Mercado (as Guillermo Díaz) Sergeant Mercado (as Guillermo Díaz) See fewer	Scandal (2012)
Marylouise Burke Librarian Librarian See fewer	I Love You Phillip Morris (2009)
Brian Goodman Al Al See fewer	The Fast and the Furious: Tokyo Drift (2006)
Donnie Masihi Dominick Birdsey - 8 yo Dominick Birdsey - 8 yo See fewer	This Is Us (2016)
Rocco Masihi 8-Year-Old Thomas Birdsey 8-Year-Old Thomas Birdsey See fewer	Beef (2023)
Michael Armand DeMatteo Fatso Fatso See fewer	Madam Secretary (2014)
Pete Forth Other Guard Other Guard See fewer	I Know This Much Is True (2020)
James Pravasilis Third Guard Third Guard See fewer	The Prime (2017)
Tim Ruddy Robocop Robocop See fewer	Gettysburg (1993)
Sandra Berrios Social Worker at Hatch Social Worker at Hatch See fewer	The Adjustment Bureau (2011)
Laura Silverman Kristin Kristin See fewer	Dr. Katz, Professional Therapist (1995)
Christine Parks Humanities Department Chair Humanities Department Chair See fewer	I Know This Much Is True (2020)
Morgan Sullivan Office Buddy (as Morgan E. Sullivan) Office Buddy (as Morgan E. Sullivan) See fewer	Dead Ringers (2023)
Chris Swain Hospital Aide (as Chris Swain Jr.) Hospital Aide (as Chris Swain Jr.) See fewer	Power Book III: Raising Kanan (2021)
Jake Robards Landlubbers (voice) Landlubbers (voice) See fewer	Billions (2016)
Michael Genet Thomas' Surgeon Thomas' Surgeon See fewer	Talk to Me (2007)
Apurv Agrawal Ma's Surgeon Ma's Surgeon See fewer	I Know This Much Is True (2020)
Maria Gonzalez Ma's Oncology Nurse Ma's Oncology Nurse See fewer	I Know This Much Is True (2020)
Sarah Marcum Reyes Ma's Hospice Nurse (as Sarah Reyes) Ma's Hospice Nurse (as Sarah Reyes) See fewer	I Know This Much Is True (2020)
Alice Rothman-Hicks Hospice Worker Hospice Worker See fewer	I Know This Much Is True (2020)
Joy Decker Airline Passenger (uncredited) Airline Passenger (uncredited) See fewer	Sanctioning Evil (2022)
Peter Gallino College Student (uncredited) College Student (uncredited) See fewer	Poker Face (2023)
Albert Skowronski ER Patient (uncredited) ER Patient (uncredited) See fewer	The Dead Don't Die (2019)
Nacia Walsh Nurse (uncredited) Nurse (uncredited) See fewer	Obliterated (2023)