Share
Copy

No Way Out: Undercover in Solitary Confinement

Gregg Marcantel, Secretary of Corrections for New Mexico, spent 48 hours in solitary confinement.
08:11 | 06/20/2014

Transcript for No Way Out: Undercover in Solitary Confinement

Tonight, there are an estimated 80,000 people locked up in solitary confinement in America. You're about to meet a prison official who wants to experience it firsthand. He's embarking on a radical,... See More
This transcript has been automatically generated and may not be 100% accurate.
Now on ABC News is always on.
Coming Up
9:00 PM ET
News Pop
MORE VIDEO
Sections
Shows
Watch the Full Episode
Nightline 9/22: US Launches Airstrikes Against ISIS in Syria
The Desperate Search for Missing UVA Student; Inside 'The Secret Life of Cats'

US Launches Airstrikes Against ISIS in Syria

US Launches Airstrikes Against ISIS in Syria

US military bears down on the Islamic terrorist group as thousands of refugees flee the region.

The Desperate Search for Missing UVA Student

The Desperate Search for Missing UVA Student

Police release new details about a person of interest who may have been the last one to see Hannah Graham.

Inside 'The Secret Life of Cats'

Inside 'The Secret Life of Cats'

A new National Geographic documentary explains why cats act the way they do.