Downton Abbey actor Dan Stevens stars in trailer for upcoming thriller film The Guest. He plays David a man who manages to infiltrate the Peterson family who are grieving the death of their son Caleb, a soldier who died while on duty in Afghanistan. David tells the family that he is a friend of their son and Caleb’s siblings are at first hesitant but soon warm to him. He soon turns on them and so begins an influx of accidental deaths taking place. The cast consists of Maika Monroe, Lance Reddick and Leland Orser. The film is directed by Adam Wingard and is scheduled to be released in UK cinemas on the 5th of September 2014.