One failure of 9/11 that has not received the attention it deserves is the inadequacy of the U.S. and international network of financial transparency reporting requirements to detect terrorist finance. In "Hide and Seek", John A. Cassara, an expert in the fields of terrorist financing and money laundering, provides personal insight into the workings of the intelligence and law enforcement communities. His memoir provides a true-life perspective on issues, procedures, government cultures, and decisions that are so vitally important today.