This work is a very well written and well developed account of the amount of work, effort, and heart went into investigating one of the darkest days in the history of this nation. Although this book does fill in some questions that those who have read their official report may have asked it has failed to do what is impossible and that is answer the still remaining questions about what happened that. This task is and will continue to be impossible since the questions we all want answered were doomed to be unanswered the second the attacks began and those performing them died, keeping their secrets forever. Despite this I truly enjoyed this book and have great respect for the work done both in the commission and on presenting the information about 9/11 to Americans by these two great public servants. ( )