Marine Scout-Sniper Jack Valentine had his first kill in Iraq at the start of the Persian Gulf War. Three years have passed, and he's back in Baghdad, obsessed with taking down al-Qaeda terrorist Abu Musab al-Zarqawi. Jack missed his first shot at Zarqawi, and it's haunted him ever since - even though the attack earned him the name the Ghost of Al-Anbar. Now leading his own platoon, Jack is determined to hunt down his target this time. But the ruthless leader of a band of mercenaries is feeding al-Qaeda secret information - and also pursuing the love of Jack's life, FBI agent Liberty Cruz.