Katherine Boyer Waterston (born March 3, 1980) is an American actress. She made her feature film debut in Michael Clayton (2007). She then had supporting roles in films including Robot & Frank, Being Flynn (both 2012) and The Disappearance of Eleanor Rigby: Her (2013) before her leading role as Shasta Fay Hepworth in Paul Thomas Anderson's Inherent Vice (2014). In 2015, she portrayed Chrisann Brennan in Steve Jobs. She had a starring role in the Harry Potter prequel, Fantastic Beasts and Where to Find Them (2016). In 2017, Waterston will star in Alien: Covenant, a prequel to Ridley Scott's Alien film series.