"In Who They Were, Dr. Robert C. Shaler, the man who directed the largest and most ground-breaking forensic DNA investigation in U.S. history, tells with poignant clarity and refreshing honesty the story behind the relentless effort to identify the 2,749 victims of the attacks on the World Trade Center." "No part of the investigation into the 9/11 attacks has taken as long or been less discussed than the daunting task of identifying the victims - and the hijackers - from the remains in the rubble of Ground Zero. In Who They Were, Dr. Robert C. Shaler, former director of the Forensic Biology Department at the New York City Office of the Chief Medical Examiner, tells the inside story of the relentless process of DNA identification and depicts the victories and frustrations that he and his team of scientists experienced during more than three years of grueling work."