For 13 summers, Timothy Treadwell lived among Alaska's coastal brown bears, convinced he shared an unbreakable bond with them. In October 2003, that belief cost him and his girlfriend their lives.

This episode traces a fractured man's search for identity, from a failed Hollywood career to the Grizzly Maze, and the anthropomorphism that overrode every basic rule of safety.

• Reinventing himself after losing the Cheers role and a near-fatal overdose
• Refusing electric fences and bear spray on principle
• Celebrity appearances while rangers logged repeated violations
• Returning in October, over a ticket dispute, into hyperphagia season
• The lens-capped camera that captured six minutes of audio