A year ago Tuesday, Osama bin Laden was killed by U.S. forces inside a compound in Abbottabad, Pakistan. The decade-long search for bin Laden is detailed in a new book by CNN national security analyst Peter Bergen. The name of the book is Manhunt. Bergen is one of the first Americans to ever interview the al-Qaida leader. In Manhunt, he outlines how U.S. national security officials pored over thousands of clues before zeroing in on where bin Laden and his family members were living.