'I Know This Much Is True' Premiere: Mark Ruffalo's brilliance touches hearts, fans say he deserves an Emmy

To play both roles, Ruffalo gained 30 pounds for scenes that involved Thomas
Mark Ruffalo (HBO)
Mark Ruffalo (HBO)

Spoiler for 'I Know This Much Is True' Episode 1

The first episode of 'I Know This Much Is True' deepened the sentiments one would go to depths of to be there for their family. While the episode was heartbreaking and some may say even difficult to watch, Mark Ruffalo's delivery of twin brothers Dominick and Thomas Birdsey is an exceptional portrayal of the intense and impeccable actor he is. Ruffalo's performance in the devastating series will 100 percent make you want to watch more, even with tears in your eyes. Fans took to Twitter to thank Ruffalo as the series premiere stole hearts everywhere.

"The wait was worth it. Thanks Mark Ruffalo for giving us art #IKnowThisMuchIsTrue #AskMarkRuffalo," tweeted a fan. "#IKnowThisMuchIsTrue is heartbreaking and powerful and Mark Ruffalo truly is one of the best actors working today," tweeted another fan.

The episode introduced us to the two brothers, their mother and stepfather reeling in a sad family dynamic using flashbacks and bringing us back to the current day in the narrative. Thomas suffers from paranoid schizophrenia and while Dominick promised his mother on her death bed that he would be there for his brother, that responsibility bore a heavy burden.

To play both roles, Ruffalo gained 30 pounds for scenes that involved Thomas. "We didn't want it to be like I run and throw a wig on and do the same scene in the same day, so we took six weeks off to really separate these two guys. And Thomas is on medication, mood stabilizers and anti-psychotics. A lot of people put on weight. Putting on the weight for Thomas was really challenging. I didn't expect it to be. I thought I was going to have a fun time doing that, but when you're force-feeding yourself, some of the romance of food sort of leaves," said Ruffalo.

"WOW! No questions. I just wanted to say what an outstanding actor you are. I already knew you were good... but wow just wow!!! #AskMarkRuffalo #IKnowThisMuchIsTrue #HBO," tweeted another fan.

Ruffalo's dedication to playing both brothers, and both intense roles individually, is clearly visible in the first episode. "#IKnowThisMuchIsTrue’s first episode was fantastic. Mark Ruffalo should win an Emmy for this role. I can’t wait for next Sunday," tweeted another fan. While the series and the narrative are alluring in itself, it seems as though Ruffalo has impressed fans enough and left them wanting more.

While the role of The Hulk has always been part of Ruffalo's persona as an actor, his role in this new HBO series has managed to bring him to the forefront for an aesthetic performance, and we're here for it. "Mark continues to confirm that he is one of the best actors of the moment, I am proud #IKnowThisMuchIsTrue #AskMarkRuffalo," tweeted another fan.

'I Know This Much Is True' airs Sundays at 9pm EST on HBO.

GET THE BIGGEST ENTERTAINMENT STORIES
STRAIGHT TO YOUR INBOX.

MORE STORIES

Sean Reagan’s past shapes a rescue in ‘Boston Blue’ Season 2 Episode 6 as Mika Amonsen discusses continuing the character’s ‘Blue Bloods’ story.
2026-11-14T19:02:59.000Z
Left Bank Pictures has responded to a tragic incident at the Edinburgh studio used for ‘Dept. Q’ as police inquiries into the circumstances continue.
2026-11-14T15:25:47.000Z
A fan-favorite ‘Matlock’ star shares a behind-the-scenes update as the CBS drama prepares for its Season 3 return.
2026-11-14T14:08:57.000Z
‘Gilmore Girls’ documentary ‘Drink Coffee, Talk Fast’ brings back familiar cast members, including Jared Padalecki and Scott Pattersonts
2026-11-14T10:08:21.000Z
'CSI' veteran Marg Helgenberger was once one of the highest-paid small-screen actresses
2026-11-14T09:17:43.000Z
Dexter sets his sights on the Jaw Splitter in Season 2, Episode 3, while a fan theory links the mysterious killer to actor Jack Dylan Grazer.
2026-11-14T07:37:35.000Z
‘Law & Order: SVU’ showrunner Michele Fazekas addresses Benson and Stabler’s future after their emotional reunion in the milestone 600th episode
2026-11-14T07:25:13.000Z
‘Station 19’ alum Jay Hayden joins ‘Fire Country’ Season 5 as Mason Ellis, whose return to Edgewater sparks a new conflict between Bode and Jake
2026-11-14T06:34:18.000Z
CBS brings ‘Marshals’ and ‘Tracker’ back to its Sunday lineup on November 15 with new episodes following a one-week break for ‘Cupertino.’
2026-11-14T05:54:18.000Z
Boone and Mickey's relationship gets complicated with Emmy's arrival in 'Sheriff Country'
2026-11-14T04:43:33.000Z