sentences:  Keir Gilchrist
  
  Keir David Peters Gilchrist (born 28 September 1992) is an English-born Canadian actor and musician.Gilchrist is known for playing Marshall Gregson on Showtime's original series "United States of Tara", Craig Gilner in the 2010 comedy-drama film "It's Kind of a Funny Story", Paul in "It Follows", and Sam Gardner in the Netflix original series "Atypical".