Innocent (2009 film)

Innocent, also known as Helix, is a 2009 American action drama film directed by Aram Rappaport, filmed in downtown Chicago, Illinois in one continuous take. There are no cuts in the filming. Innocent is one of the first ever featurelength films to be shot in one take, and it is a kidnapping thriller that circumnavigates downtown Chicago on foot and by car.

Source: Wikipedia