Ruby Wax learns about the plight of her parents, who fled the Nazis and went to America.

Michelle Keegan uncovers some exceptional women on her family tree, including a special connection to the suffragettes.

Oscar-winning actress Olivia Colman travels to India to find out more about her great-great-great-grandmother.

Comedian Lee Mack finds out more about his great-grandfather, who was also a comedian, known as Billy Mac.

Boy George expects to find sadness in his family tree, but delights in a new sense of his family being part of Irish history.

Shirley Ballas investigates her great-grandmother who abandoned her husband and children for a more exciting life in America.

Shirley Ballas investigates her great-grandmother who abandoned her husband and children for a more exciting life in America.

Marvin Humes looks at his Jamaican and his English heritage, finding exceptional stories on both sides of the family.

Marvin Humes looks at his Jamaican and his English heritage, finding exceptional stories on both sides of the family.

Robert 'Judge' Rinder investigates his grandfather, a Holocaust survivor, and the dark mystery surrounding his great-grandfather.

Robert 'Judge' Rinder investigates his grandfather, a Holocaust survivor, and the dark mystery surrounding his great-grandfather.

Paralympian Jonnie Peacock looks back through the generations and ends up captivated by his four-times-great-grandmother.

Paralympian Jonnie Peacock looks back through the generations and ends up captivated by his four-times-great-grandmother.

Actor Danny Dyer sets out to discover the history of his family in the East End of London.

Actor Danny Dyer sets out to discover the history of his family in the East End of London.

Shirley Ballas investigates her great-grandmother who abandoned her husband and children for a more exciting life in America.

Marvin Humes looks at his Jamaican and his English heritage, finding exceptional stories on both sides of the family.

Robert 'Judge' Rinder investigates his grandfather, a Holocaust survivor, and the dark mystery surrounding his great-grandfather.

Paralympian Jonnie Peacock looks back through the generations and ends up captivated by his four-times-great-grandmother.

Actor Danny Dyer sets out to discover the history of his family in the East End of London.

Amanda Holden explores her French ancestry.

Amanda Holden explores her French ancestry.

Liz Bonnin investigates her parents' lineages on the islands of Trinidad and Martinique.

Liz Bonnin investigates her parents' lineages on the islands of Trinidad and Martinique.

Singer Cheryl tracer her roots and discovers a sea-faring ancestor and a family tragedy.

Singer Cheryl tracer her roots and discovers a sea-faring ancestor and a family tragedy.

Ricky Tomlinson traces his roots and discovers that he comes from generations of carters.

Ricky Tomlinson traces his roots and discovers that he comes from generations of carters.

Sir Ian McKellen uncovers a theatrical ancestor and a Victorian political activist.

Sir Ian McKellen uncovers a theatrical ancestor and a Victorian political activist.