Actor Joe Manganiello reveals more about how he found out about his Black ancestry during an episode of PBS’ Finding Your Roots.

During the upcoming episode, shown at a recent early screening attended by Manganiello, the True Blood star took a deep dive into his family lineage, surprising him and host Henry Louis Gates.

“If I have a short list of all-time greatest hits, Joe Manganiello’s paternal ancestry is on that list,” Gates told Rolling Stone.