Chris Smith is an American television and film actor, he is most famous for playing Dennis in the 2011, horror movie, Paranormal Activity 3.
Smith was born in Rockville Centre, New York. He attended the NYUs, Tisch School of the Arts and he also trained at the Atlantic Theater Company Acting School in New York City. Smith is the founder, head writer and principal performer of the sketch comedy troupe Harvard Sailing Team.
Source: Wikipedia