Finding Your Roots, with Henry Louis Gates,  begins its new season on January 8, 2019 at 8:00 PM ET on your local PBS station. Check your local station guide.  This is the fifth season of the show—the episode guide may be found at:

http://www.pbs.org/weta/finding-your-roots/about/season-5-episode-guide/

The new season includes Andy Samberg, Sheryl Sandberg, Sarah Silverman and many more. The ten episodes will have 26 guests learning about their family history.

see: https://www.pbs.org/video/season-5-preview-uv6am6/