The new season of Who Do You Think You Are? premieres Monday, May 21 at 9/8c only on TLC.

Actress Liv Tyler discovers a musician in her line of ancestors.

Get a first look at actress Liv Tyler’s journey.

Actor John Stamos meets with modern Greek historian Katerina Lagos where he learns that his paternal grandfather is listed as an orphan at only age 13.

Actor John Stamos discovers his paternal great-grandfather was murdered in a village in Greece.

Get a first look as actor John Stamos digs into his family history.

Smokey Robinson continues to learn about the surprising path of his maternal grandfather.

Get a first look at Smokey Robinson’s journey of exploring his family history.

First look at Jessica Biel’s journey of learning about her ancestry.

Noah Wyle learns the truth about the demise of his ancestor.

Noah Wyle discovers his ancestor fought in the Battle of Shiloh, one of the bloodiest battles of the Civil War.

A first look at actor Noah Wyle's journey to learn more about his family history.

Jennifer Grey’s ancestors travel to the U.S.

Jennifer Grey discovers her grandfather was a conscientious objector.

Jennifer Grey explains how she remembers her grandfather

Get a first look at Jennifer Grey’s journey on Who Do You Think You Are?

This season of Who Do You Think You Are? features J.K. Rowling, Alfre Woodard, Tom Bergeron, Ginnifer Goodwin, and Bryan Cranston.

Lisa Kudrow visits The Talk to promote the newest season of "Who Do You Think You Are?" and announce that Talk host Julie Chen will appear on the show!

Jesse follows his great grandfather's trail to Alaska. He traces the path of the ambitious expedition on a boat trip up a river among snow-capped mountains and learns that his great grandfather's journey was an arduous one.

Rachel and Kayleen McAdams learn that their great ancestor James Gray was a British loyalist.

Minnie Driver unravels the deep family secrets her late father kept hidden.

Rachel and Kayleen McAdams discover an English ancestor who lived and worked in a privileged world. As they unravel the mystery of their Canadian heritage, they uncover the harrowing circumstances that brought their family to Canada.

The seventh season of "Who Do You Think You Are?" returns on Sunday, March 5 at 10/9c.

Jim Parson's goes on a search for his ancestry.

WHO DO YOU THINK YOU ARE? returns this spring to give eight new celebrities a unique opportunity to dig into their roots and learn more about their family history. New episodes begin Sunday, March 8 at 10/9c.

Cynthia Nixon visits a prison to learn more about her ancestor, Martha, who was the only woman incarcerated there among dozens of men.

Cindy Crawford travels through her ancestors lineage.

When "Who Do You Think You Are?" returns on Tuesday, Feb. 24 at 10/9c, celebrities will discover life-altering truths about their ancestors.

Trisha Yearwood reconnects with her family history.

Cynthia Nixon discovers an ancestor who resorted to extreme measures to save her children -- and herself -- from harm.

Rachel and Kayleen McAdams explore the roots of their 5x great-grandfather who was actually a British loyalist in the American Revolution.

Get to know Dan Bucatinsky, Executive Producer of "Who Do You Think You Are?" In this video, the actor, author, dad and TV fanatic answers questions about his life and career.