This film made an impression on me when I first saw it on TV in the 1990's, so I was pleased to see it appear on DVD. At first glance, this may appear to be a fairly standard British film from the early 1960's, with a few familiar faces in the cast, but appearances are deceptive here. The casting is excellent - Richard Attenborough, plays the devious and cowardly Whitey Mullen. Eddie Constantine plays the tough and capable Mark. John Gregson plays Jack Bennet, the pilot running an air passenger service in an ageing Catalina Flying Boat. The female cast comprises Eva Bartok, who plays the flirtatious and carefree Maria. Pier Angeli, plays cool and efficient stewardess Teresa. Jean Anderson plays the wonderfully prim and stoical Miss Shaw. The first 20 minites of the film are used to bring these, and other characters into the storyline, as they embark on their eventful flight. This film works for a number of reasons. the excellent cast bring character to their respective roles. Expert direction from Guy Green, who masterfully keeps the tension building, until the very end of the film. The tightly plotted storyline and atmospheric photography, make for compelling viewing. Also, there is something rather chilling about the disaster that unfolds, as the characters gradually become aware of their fate. This film packs an amazing amount into a fairly short running time and the pace never lets up. It all makes for great entertainment.