Extras

Video thumbnail: FRONTLINE The Man Who Knew - Preview

FRONTLINE

The Man Who Knew - Preview

Airs Tuesday, August 30, 2011 at 9:00 p.m. ET/PT. Check your local listings.

The Man Who Knew - Preview

Video thumbnail: FRONTLINE A 1997 Interview With John O'Neill

FRONTLINE

A 1997 Interview With John O'Neill

Footage of "The Man Who Knew" talking about his job, the work of FBI agents and more.

A 1997 Interview With John O'Neill