Molly Ephraim was born on May 22, 1986, and her birthplace is Philadelphia, Pennsylvania, United States. She is the daughter of William Ephraim (her father), and Nina Zebooker (her father). She completed her Bucks County Playhouse and Princeton University. She is an American actress who has appeared in films, television, and Broadway, Off-Broadway, and regional theater productions. She made her acting debut in 2008, and her first film is College Road Trip. Molly Ephraim is best known for her role as Ali Rey in the horror movie series Paranormal Activity. After that, she made many notable films such as Paranormal Activity: The Marked Ones, The Front Runner, Last Man Standing.