A Simple Favor

"Once Upon a Time Emily" is about the friendship of a mother and vlogger named Stephanie with Emily, a mysterious and upper-class woman whose sons attend the same school. One day, Emily asks her to pick up her son from school and then disappears. Stephanie starts an investigation to delve into Emily's cloudy past. In the meantime, Emily's husband Sean also gets involved. The film offers its audience a gripping tension and allows viewers to test their own guesses as they try to understand who and what Emily really is. Viewer experiences generally praise the film's unexpected turns and surprising ending, and appreciate Stephanie's efforts to solve Emily's mystery.

The film was shot in various locations in America. The shootings in Toronto, Ontario and New York are particularly striking.