I Know This Much Is True: Miniseries (2020)

I Know This Much Is True

Critics Consensus

I Know This Much is True's relentlessly grim plotting makes it a difficult watch, but the strength of Mark Ruffalo's dual performances is enough to make it a dark tale worth tuning into.



Critic Ratings: 57


Audience Score

User Ratings: 218

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Air date: May 10, 2020

Series premiere. Paranoid schizophrenic Thomas Birdsey has a violent public breakdown, and Dominick Birdsey finds himself stepping up to defend his identical twin brother in unexpected ways. As he navigates the fallout of Thomas' actions, Dominick reflects on their childhood growing up under the tyrannical rule of their volatile stepfather, Ray, and their persistent desire to know the identity of their biological father.

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Air date: May 17, 2020

Tensions rise between Dominick and his live-in girlfriend, Joy, as the media begins to take an interest in Thomas' case. In his attempt to have Thomas released from the Hatch forensic institute for the criminally insane, Dominick finds a potential ally in social worker Lisa Sheffer, but learns that helping his brother may be more difficult than he thought. Dominick clashes with Thomas' new psychiatrist, Dr. Patel, as she begins to probe into his past.

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Air date: May 24, 2020

Sheffer preps Dominick for a pivotal hearing with Hatch's review board that could decide Thomas' fate. A chance encounter with an old classmate brings painful childhood memories to the surface. Dominick reflects on his and Thomas' time together at college, during which he met Dessa and the signs of his brother's illness first began to manifest. Joy attempts to remedy the problems in her and Dominick's relationship.

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Air date: May 31, 2020

Despite the protestations of those closest to him, Dominick returns to work before fully recovering from his accident. Heavily medicated, Dominick recalls the disturbing incident that lead to Thomas' first hospitalization while counting down the hours to Thomas' hearing with the Hatch review board.

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Air date: Jun 7, 2020

Dominick learns the details of his Sicilian grandfather's arrival in the early 1900s to Three Rivers, and becomes convinced his family is cursed, a conclusion that Dr. Patel pushes back against. Meanwhile, a startling update on Thomas from an unlikely source prompts Dominick to take drastic action.

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Air date: Jun 14, 2020

Series finale. A lifetime of animosity between Dominick and Ray spills over in public at an inopportune time. After an unexpected tragedy, Dominick seeks reconciliation with those he has hurt, and the question that has plagued Dominick all his life is finally answered.

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I Know This Much Is True: Miniseries Videos

Tv Season Info

Cast & Crew

Mark Ruffalo
Dominick Birdsey
Rosie O'Donnell
Lisa Sheffer
Archie Panjabi
Dr. Patel
Imogen Poots
Joy Hanks
John Procaccino
Ray Birdsey
Philip Ettinger
Young Adult Dominick Birdsey
Aisling Franciosi
Young Dessa Constantine
Michael Greyeyes
Ralph Drinkwater
Guillermo Diaz
Sergeant Mercado
Marcello Fonte
Domenico Onofrio Tempesta
Kathryn Hahn
Dessa Constantine
Ben Browning
Executive Producer
Glen Basner
Executive Producer
Mark Ruffalo
Executive Producer
Gregg Fienberg
Executive Producer
Lynette Howell Taylor
Executive Producer
Wally Lamb
Executive Producer
Anya Epstein
Executive Producer
Jamie Patricof
Co-Executive Producer
Show all Cast & Crew

News & Interviews for I Know This Much Is True: Miniseries

Critic Reviews for I Know This Much Is True Miniseries

All Critics (57) | Top Critics (25)

It's not Ruffalo's fault - he's great here - but the material is spread too thin over too much canvas, then culminates in too banal a "truth." In a word, it's as dull as it is grim.

May 7, 2020 | Rating: 2/4 | Full Review…

Each brother could become a showy caricature of their written selves, and yet [Ruffalo] lives in the small, quiet moments as well as big, explosive outbursts.

May 7, 2020 | Rating: B | Full Review…

"I Know This Much Is True" misses the mark in terms of storytelling. It just sits there, a roiling mass of misery that fails to provide you with a compelling reason to keep watching.

May 7, 2020 | Full Review…

Seeing actors do what they do best, with Cianfrance giving them the space to do it, makes I Know This Much is True a real feast.

May 8, 2020 | Rating: 3.5/4 | Full Review…

It's hard to imagine this grim wallow -- which mistakenly views trauma and drama as interchangeable -- playing that much better even in a time of overwhelming peace and prosperity.

May 7, 2020 | Rating: 2/5 | Full Review…

The best performance I've seen of Mark Ruffalo (plays the lead twins) in this HBO mini-series that is perfect from the first to the last minute. Without a doubt one of the favorites of the year. [Full review in Spanish]

Sep 24, 2020 | Rating: 5/5 | Full Review…

[It is] essentially a classical Greek tragedy in the clothing of a wannabe Great American Novel, running its characters through an endless tide of misfortunes before the gut-wrenching catharsis.

Jul 24, 2020 | Full Review…

Combined with Cianfrance's addiction to this story and the intimacy of the acting, I Know This Much Is True creates a palatable amount of realism in tragedy.

Jul 15, 2020 | Full Review…

Ruffalo's tour de force feels just like a vehicle for him. But not for the whole story that should have been told. [Full review in Spanish].

Jul 14, 2020 | Rating: 2.5/4 | Full Review…

Mark Ruffalo delivers what may be the finest performance of his career. Gritty, challenging and an incredible ensemble cast to include Native actors Michael Greyeyes and Tatanka Means.

Jul 13, 2020 | Rating: 10/10 | Full Review…

I Know This Much is True does not manage to fully captivate its audience due to its very lose adaptation of the source material. [Full Review in Spanish]

Jun 10, 2020 | Rating: 2.5/5 | Full Review…

Ruffalo is convincingly grim in both roles, but this kind of dark drama that tries to find poetry in misery won't be what most people need right now.

May 22, 2020 | Full Review…

Audience Reviews for I Know This Much Is True: Miniseries

  • Apr 06, 2021
    One of the most difficult things I have ever watched, one that doesn't quite leave you satisfied, but with a sort of melancholy happiness. Mark Ruffalo's dual performance is absolutely impressive, even though it doesn't showcase nearly enough of the other part. Kathryn Hahn is lovely as always, and the writers and director were absolutely on-point. I KNOW THIS MUCH IS TRUE was powerful from start to finish, though not at all a fun ride to be on.
  • Mar 31, 2021
    Best mini-series I have ever seen , I cried every episode
  • Mar 17, 2021
    I Know This Much is true is a tough but very enjoyable series to watch. Mark Ruffalo's performance is excellent and he deserves a lot of credit for it. Playing a character as unique as Dominick and most importantly Thomas Birdsey is tough and only top tier actors like Ruffalo can pull it of. The series has a good supporting cast as well with a great chemistry among unlikely stars. My only complaint would be the holes in the storyline and the uneven episode times. Otherwise this is why it sits comfortably in the top half of the best things on TV recently
  • Mar 17, 2021
    The best mini-series I have ever seen to date.
  • Mar 11, 2021
    The story was fascinating and it was hard to not keep watching but the pace was a bit too slow for me. I think this whole story from beginning to end could have been movie length (90 mins) or about 3 show episodes, but instead we're "treated" to 6 episodes between 40-50 minutes a piece. That was my only complaint about this mini-series is that it wasn't mini enough and it may have been better as a movie.
  • Feb 26, 2021
    Ruffalo is an antisemite
  • Jan 16, 2021
    Mark Ruffalo is devastatingly good in this mini series. This show shows brilliantly how important family is and how to bring up someone who finds this world challenging and when are you pushing them to much. It was great to see those kinds of questions asked in this show.
  • Jan 08, 2021
    Kept waiting for more to happen but it fell short. Dragged.
  • Dec 25, 2020
    I'm almost afraid to say it because it's so obvious, but Ruffalo is very good.
  • Dec 06, 2020
    Mark Ruffalo being depressed, angry and schizophrenic for 6 hours straight just to get weird mystic/cursed/deus ex machina ending. It felt like they cover plot holes and plot meaninglessness in depression for some reason. Don't worth it.

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