Saturday, October 1 at 3 p.m. and Sunday, October 2 at 9 p.m. ET

Hosted by Bill Hemmer

Anwar al-Awlaki is dead.

In this updated Fox News investigation, we go deep inside the mysterious and deadly world of American born terrorist Anwar al-Awlaki. Fox News correspondents Catherine Herridge and Greg Palkot follow Awlaki's twisted and destructive trail from suburban communities in the U.S. to his hideout in Yemen where he met his death.

New evidence emerging in the details about the Times Square bomber, the failed attempt to blow up a plane on Christmas Day and the massacre at Fort Hood put, for the first time, a U.S. citizen on the CIA's "capture or kill" list.

We share exclusive details about his life in America and his command of the Internet as a digital jihadist.

Exclusive interviews with former and current government agents raise several questions -- was Awlaki part of a terrorist cell within this country that attacked America on 9/11? Why was he invited to lunch at the Pentagon shortly after the attacks of 9/11? And following the attacks, was there an attempt by our government to turn Awlaki into an informant or track him for intelligence?

• READ: Justice Department's statement to Fox News regarding our inquiry into the decision to rescind Awlaki's arrest warrant

You will see for yourself how this American terrorist used our system against us.