On the night of September 11, 2012, the American diplomatic mission at Benghazi, Libya, came under ferocious attack by a heavily armed group of Islamic terrorists. The prolonged firefight, and the attack hours later on a nearby CIA outpost, resulted in the deaths of four Americans, including the American ambassador to Libya. Based on the cooperation of eyewitnesses and confidential sources, the authors explore the terrifying twelve-hour ordeal confronted by the Ambassador, his security contingent, and the CIA specialists who raced to rescue them.