VIDEO : You Actress To Star In Upcoming Horror Film

?You? star Elizabeth Lail has been cast to star in STXfilm?s upcoming horror film ?Countdown.?

The film centers around a young nurse who downloads an app that claims to predict exactly when a person is going to die ? then it tells her she only has three days to live. With time ticking away and a mysterious figure haunting her, she must find a way to save her life before time runs out.