As someone with a keen interest in NASA and space travel I was looking forward to this documentary. However, perhaps depending on what you're looking for, it mostly fails to deliver. What should be a fascinating in to how this terrible tragedy came to pass unfortunately falls a little flat over the 4 episodes. There is probably about 1 episodes worth of content here, padded out with sentimental testimony from family members of the crew and some dull interviews with former NASA employees.