"Spying on Saddam" chronicles the UN's dramatic, thwarted eight-year long effort to find and dismantle Saddam Hussein's secret weapons of mass destruction. While the achievements of the UN weapons inspection mission (UNSCOM) were considerable—destroying more of Iraq's weapons than were eliminated in the Gulf War—it fell short in eliminating all deadly arsenals. In December 1998, Iraq expelled all UNSCOM weapons inspectors on the charge that UNSCOM had become a spy agency. This Frontline report traces the history of UNSCOM from its birth at the end of the Gulf War, to its daring inspections and confrontations with the Iraqi military, to the final events leading up to the expulsion. The story's central figure is Scott Ritter, former U.S. Marine and UNSCOM inspector, who claims that U.S. Intelligence destroyed UNSCOM's credibility when American spies penetrated and compromised the UN arms inspection teams. Frontline investigates Ritter's charges and asks: who really killed UNSCOM?