WNBA star Brittney Griner learns about the horrors one of her ancestors endured at a mental asylum in an exclusive clip from Tuesday’s episode of PBS’s hit series, Finding Your Roots with Henry Louis Gates Jr.

In the clip below, Griner reads the words from an interview her ancestor completed in the late 1800s. Some of the questions are about whether she’s seen “white or Negro” ghosts or God. Griner reacted with shock as she learned about the questions, calling them “weird.”

Both Griner and Chris Paul are in this week’s episode

The clip comes from Tuesday’s episode, “Love & Basketball,” featuring Griner and NBA star Chris Paul.

Griner and Paul are two of Season 12’s all-star lineup, including Kate Burton, Lizzy Caplan, Kristin Chenoweth, Liza Colón-Zayas, Darren Criss, Danielle Deadwyler, Barry Diller, America Ferrera, Flea, Rhiannon Giddens, Sara Haines, Wiz Khalifa, Sanaa Lathan, Spike Lee, Tracy Letts, Delroy Lindo, Lizzo and Hasan Minhaj.

Here’s more about the new season of Finding Your Roots:

Finding Your Roots with Henry Louis Gates, Jr. returns for its 12th season on PBS. Over the course of ten new episodes, Gates and his team use genealogical detective work and cutting-edge DNA analysis to trace the family trees of twenty compelling guests, telling stories that illuminate America’s fundamental diversity.

As the pages turn in each guest’s book of life, emotional revelations give way to complex questions about identity. Through Gates’ discerning touch, his guests learn what every family history shares—love, courage, and sacrifice—and how our histories transcend borders, merging to form a national root system fortified by difference as well as commonality. Along the way, viewers are transported from coastal Africa to rural Texas; from Muslim communities in northern India to the ancestral lands of the Cherokee Nation; from villages in the Philippines to George Washington’s camp at Valley Forge—all in search of the stories that will bring our guests’ ancestors to life.

When does ‘Finding Your Roots’ air on PBS?

The series airs Tuesdays at 8 p.m. on PBS.