X

Join or Sign In

Sign in to customize your TV listings

Continue with Facebook Continue with email

By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.

I Know This Much Is True

Based on the 1998 bestselling novel by Wally Lamb, adapted and directed by Derek Cianfrance, this limited series follows the parallel lives of identical twin brothers, played by Mark Ruffalo. A family saga, it tells a story of betrayal, sacrifice and forgiveness set against the backdrop of 20th-century America.

Loading. Please wait...

Content not available in your region? ExpressVPN can help you stay connected wherever you are. Get 4 extra months FREE with TV Guide's exclusive offer.

Cast & Crew See All

Mark Ruffalo
Dominick Birdsey
John Procaccino
Ray Birdsey
Rob Huebel
Leo

Season 1 Episode Guide See All

Episode 1

One

Sun, May 10, 202060 mins

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.

Where to Watch
I Know This Much Is True, Season 1 Episode 1 image

Featured Video

I Know This Much Is True
I Know This Much Is True
2:00

2:00 I Know This Much Is True

Awards

  • 2021 - Golden Globe - Best Performance by an Actor in a Limited Series, Anthology Series or a Motion Picture Made for Television - winner
  • 2020 - TCA Award - Individual Achievement in Drama - nominated
  • 2020 - Gold Derby TV Award - Movie/Limited Series Actor - nominated
  • 2020 - OFTA Television Award - Best Actor in a Motion Picture or Limited Series - nominated

You May Also Like See All

The Office
Homicide: Life on the Street
The Staircase
The Sopranos

Popular Shows See all shows

The Pitt

3 Seasons
Emergency medicine doctors juggle personal crises, workplace politics, and high emotions in this drama series.

Band of Brothers

1 Season
This landmark miniseries based on Stephen E. Ambrose's best-seller, and executive produced by Steven Spielberg and Tom Hanks, recounts the remarkable achievements of an elite team of U.S. paratroopers during World War II.
87   Metascore
2001 Action & Adventure, Drama, Documentary

Game of Thrones

8 Seasons
Summers span decades. Winters can last a lifetime. And the struggle for the Iron Throne begins. Based on the bestselling book series by George R.R. Martin and created by David Benioff and D.B. Weiss.
86   Metascore
2011 Action & Adventure, Drama, Fantasy

Heated Rivalry

2 Seasons
Two hockey stars fall into a secret romance that spans years as they chase glory and wrestle with love.
67   Metascore
2025 Drama, Sports

The Sopranos

6 Seasons
Hailed as one of TV’s essential dramas, The Sopranos follows James Gandolfini as Tony Soprano, a husband, father and mob boss whose professional and private strains often land him in the office of his therapist.
94   Metascore
1999 Suspense, Drama

Friends

10 Seasons
This is a show about love and sex and careers and a time in life when everything is possible... about the search for commitment and security... and the fear of commitment and security. Most of all, it's about friendship -- for when you're young and single in the city, your friends are your family.
65   Metascore
1994 Comedy, Drama