The series that delves into the past to uncover the answers to burning family questions continues. Historian Onyeka Nubia reveals the stark truth to an emotional Jonty Stern about his great-grandfather, who abandoned his Jewish family to move to America. There's a revelation for Anthony Ginman, who wants to learn more about his ancestor's experience as a British prisoner of war in France during the Napoleonic War. And through DNA analysis, 72-year-old John Jarrett gets a resolution to the family rumour that's blighted his life - was the man that raised him really his biological father?