A new documentary featuring Meryl Streep will premiere tomorrow on HBO. Jacob Bernstein, son of Carl Bernstein and Nora Ephron, directs this film about his mother – who died in 2012 at the age of 71 – as seen through the eyes of her closest friends and some surviving family members. Part “American Masters” portrait, part personal quest, this film explores the life and death of the person who wrote three era-defining movies – Silkwood, When Harry Met Sally and Sleepless in Seattle. A preview from the documentary can be watched in the video archive.