The fact that this was filmed in Rome at a time when you could probably still smell the fleeing Nazi's petrol fumes gives this an enthralling sense of authenticity. The story is centred around the character of "Manfredi" (Marcello Pagliero) who is being chased by the Gestapo, and so is trying to escape. Even though Rome has been declared "open" and is therefore not subject to bombardment, the citizens are still very…