In a remote South American town, four men are hired by an American oil company to transport two truckloads of nitroglycerin to an oil field, to put out a fire. It's a very hazardous task - the nitroglycerin can explode for the slightest reason, the road is treacherous and the journey is a long one. However, the money is very good and their current situation in the town is rather dire - they will do anything to improve their situation.

Great thriller-drama by French director HG Clouzot. Starts slowly and even once the hazardous journey is in progress, it doesn't seem that brilliant. However, Clouzot builds the tension and from a point it is absolutely nail-biting stuff. The scene with the boulder has to be one of the most tense movie scenes I've watched in my life.

A good character-drama too - the way the characters develop and the relationships between the four change adds a new dimension to the drama and makes for very engaging viewing.

Not perfect though. Some events and plot devices don't make much sense, though aren't crucial to the movie. The ending felt quite silly and contrived. A similar result but with a more plausible, less predictable, less stupid way of getting there would have seen the movie get a perfect score.