Nicky Campbell was adopted a few days after being born in 1961. Having already traced his biological parents some years later, Nicky now decides to trace the history of his adoptive family.

Natasha Kaplinsky travels to Cape Town to explore the story behind her parents' exile from South Africa in the 1960s, and learns about the vital role her father played in the anti-apartheid demonstrations.

Although John Hurt was born in England, he is proud of his Irish heritage and hopes he will be able to discover the truth about an illegitimate daughter in his family tree.

Griff's mother Gwyneth learned that her mother had been adopted following the death of Gwyneth's real grandparents in a train crash. Griff wonders why the the tragedy should have been kept secret for so many years.

Alistair McGowan has always assumed his family has strong Scottish roots, but he often wondered where he gets his dark eyes and skin tone from.

As a Protestant growing up in Catholic Ireland, Graham Norton sometimes felt that he and his family were made to feel like foreigners in their own country.

Olympic rowing champion Matthew Pinsent knows that his parents' families were greatly affected by WWI; two of his grandfather's brothers were killed, as well as his grandmother's only brother.