FRONTLINE

The Man Who Knew - Preview

Preview: Season 21 Episode 3 | 30s

When the Twin Towers fell on September 11, 2001, among the thousands killed was the one man who may have known more about Osama bin Laden and Al Qaeda than any other person in America: John O'Neill.

Aired: 08/30/11

Rating: NR

Watch Full Length

Problems Playing Video?