HBO is developing I Know This Much Is True, an eight-episode limited drama series starring and executive produced by Mark Ruffalo (The Avengers), from FilmNation Entertainment (Arrival).
Like HBO’s last big limited drama series, Big Little Lies, I Know This Much Is True is based on a popular book, the 1998 novel by bestselling author Wally Lamb, which was was an Oprah’s Book Club pick that year. I Know This Much Is True is described as an epic family saga that explores the American identity following the parallel lives of twin brothers Dominick and Thomas Birdsey throughout the latter half of the 20th century. Ruffalo will pull double duty, starring as both brothers.
This marks Ruffalo’s return to HBO where he starred in and co-executive produced the movie The Normal Heart, which earned him an acting Emmy nomination. He also shared in The Normal Heart‘s Best TV Movie Emmy win.
