Diane Sawyer has famously held forth on ABC’s “Good Morning America”and “World News Tonight.” Now, she’s getting ready for an appearance on wee-hours news program “Nightline.”

On Friday’s edition of “Nightline,” she will unveil her first effort since leaving the anchor chair at ABC’s “World News” in late August. She will interview New York Times journalist and author Nicholas Kristof to preview his upcoming PBS documentary series, “A Path Appears,” which examines the sex trade in the United States and how young girls are recruited to work for pimps in various U.S. cities. Clips will appear Friday evening on “World News Tonight With David Muir” and during Monday’s broadcast of “Good Morning America.”

In the report, Sawyer and Kristof go to Port Authority in New York City to meet plainclothes officers who are part of a unit that fights sex trafficking. These authorities show the pair where pimps are known to lurk as they seek vulnerable young women passing through one of  the nation’s largest bus stations.

ABC said in June that Sawyer would give up her “World News” anchoring duties to tackle a series of enterprise projects while George Stephanopoulos and David Muir assumed her responsibilities. Stephanopoulos became lead anchor on all special reports and breaking news, while Muir became anchor and managing editor of the network’s flagship evening-news broadcast.

Sawyer is also readying a new special report on women in prison, a topic she has pursued in-depth with two special reports twice before, according to a person familiar with the situation. A broadcast appearance for that report, characterized by the person as “in depth” and “long term,” has not been scheduled yet.