It is a suspense film on aircraft which is often seen as a masterpiece characterized by the first-person standpoint of a camera at the beginning, spiral staircase of geometrical design and the opening scene where a balloon flies into the air and reaches the hero's airplane.
巻頭の一人称カメラ、幾何学模様のような螺旋階段、そして風船が空に舞い上がり主人公の飛行機へと繋がるオープニングから冴え渡る、傑作とする声も多い航空サスペンス。