Subscribe From Olympian to POW, to follower of Jesus Christ. Louis Zamperini tried drinking away his war-induced nightmares until he heard Billy Graham preach about Jesus. Listen to his remarkable story of redemption on this episode of GPS: God. People. Stories. Featuring music from Sanctus Real. This episode also includes an interview with Will Graham. He talks about playing his grandfather Billy Graham in Unbroken: Path to Redemption, a movie about Louis Zamperini’s life.