Henry Joost is an American actor, director and cinematographer who primarily co-directs movies with Ariel Schulman. He made his directorial debut with the movie Catfish; he co-directed the movie with Ariel Schulman. Joost along with Schulman has since then co-directed movies such as Paranormal Activity 3 (2011), and Paranormal Activity (2014). His 2016 releases include the movies Viral (2016) and Nerve (2016).