A trailer for the incredible true story The Walk has been released - if you've no head for heights look away now.
Joseph Gordon-Levitt stars as real-life highwire walker Philippe Petit, and the film chronicles his walk between the twin towers of New York City's World Trade Center in 1974.
Petit's story was also told in James Marsh's 2008 documentary Man on Wire.
Robert Zemeckis (Back to the Future, Flight) directs the biopic which also stars Ben Kingsley.
The trailer sees Gordon-Levitt balance precariously on the roof of a skyscraper, watch it below.
The Walk is due for release on Friday October 2, 2015.
