Based on Wally Lamb’s 1998 novel of the same name, I Know This Much Is True follows the parallel lives of identical twin brothers Dominick and Thomas Birdsey (both played by Mark Ruffalo) in an epic story of betrayal, sacrifice and forgiveness, set against the backdrop of 20th century America.
HBO’s in-the-works miniseries I Know This Much Is True just added a lot of star power.
I Know This Much Is True currently has a production commitment at HBO.
Six actresses, including Rosie O’Donnell, The Good Wife alumna Archie Panjabi and Oscar winner Melissa Leo have boarded the project, TVLine has learned.