You may have read that Jessica Biel will be on TLC’s “Who Do You Think You Are” on Sunday, April 2nd.

We have learned more information about her visit to Chicago and the St. Louis areas.

• She meets a historian from Wayne State University
• Discovered that her great-great-grandfather immigrated from Hungary to Illinois in the early 1800’s.
• She toured the Alton Prison in Illinois.
• An ancestor deserted his military post.
• She takes a DNA test and receives the results. (These are pretty cool, I did one and learned some pretty interesting stuff about my heritage.)

Below is a sneak peek at what will happen during Jessica’s episode on Sunday at 10/9c on TLC. For those cable cutters out there, you can watch from their app as well.