12. Prison Vent

A journalist (Jon Walczak) receives 32 new photos of 9/11 from a camera found in the rubble of the World Trade Center — and uses clues in each frame to ID the photographer.Stream the new film "32 Frames: A 9/11 Mystery" on Apple, Amazon, or YouTube.For more information, go to 32frames.com.See omnystudio.com/listener for privacy information.

In 2001, Robert Fisher killed his family, blew up their suburban home, and vanished in a remote Arizona forest. Did he die — or escape? Listen here or on the iHeartRadio app. See omnystudio.com/listener for privacy information.

A young doctor disappears in New York City on the eve of 9/11. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

A new account of the alleged bombing, via a serial killer. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

We locate the first known photos of N1812H. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

An icy ending seems less likely as new details surface. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Back in Cordova, the search party buzzes Bob. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

The team lands in Alaska and gets to work. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

A critical clue leads to an island in Alaska. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

One man who heard the bizarre broadcast is alive. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.