Watch Broadway Alum Jesse Tyler Ferguson Uncover a Grim Account of His Ancestors' Past on Who Do You Think You Are?

Broadway alum Jesse Tyler Ferguson is on a mission to learn about his ancestors’ troubled history. On an upcoming episode of the TLC series Who Do You Think You Are?, the Modern Family star goes on a journey in search of his family’s past that brings him to the Alaskan Klondike, where his great grandfather led a fatal gold rush. In the clip below, Ferguson reads an account of the miserable conditions during that frigid expedition. Check out the sneak peek featuring the five-time Emmy nominee, and get the full unsettling story on July 30 on TLC.