TIKRIT, Iraq, Dec. 19 — The most wanted man in Iraq last week — besides Saddam Hussein — was not on anyone's Top 55 or even Top 200 fugitive list. He was a balding, paunchy middle-aged veteran of Mr. Hussein's once feared Special Security Organization, a notorious womanizer who was a member of one of the five close-knit families that supplied Mr. Hussein's most trusted lieutenants. But most important to American forces, he probably knew Mr. Hussein's whereabouts at any given moment. And last Saturday night, after his capture in Baghdad and four hours of grueling interrogation, he led United...
