Actor Naomie Harris's dramatic discoveries in this episode inspire her to anger, sadness and tears of joy.

Actor Naomie Harris's dramatic discoveries in this episode inspire her to anger, sadness and tears of joy.

In a first for the series, father-and-son comedy double-act Jack and Michael Whitehall join forces to investigate their family tree.

In a first for the series, father-and-son comedy double-act Jack and Michael Whitehall join forces to investigate their family tree.

Oscar-winning actor Kate Winslet follows a rumour of Scandinavian ancestry on her mother's side of the family and is delighted to find that she has Swedish heritage.

Oscar-winning actor Kate Winslet follows a rumour of Scandinavian ancestry on her mother's side of the family and is delighted to find that she has Swedish heritage.

Actor Charles Dance explores his family history and is determined to learn about his dad.

Actor Charles Dance explores his family history and is determined to learn about his dad.

Strictly judge Craig Revel Horwood heads to Australia to learn more about his family.

Strictly judge Craig Revel Horwood heads to Australia to learn more about his family.

Sports broadcaster Clare Balding uncovers an extraordinary American dynasty.

Sports broadcaster Clare Balding uncovers an extraordinary American dynasty.

Actor Charles Dance explores his family history and is determined to learn about his dad.

Strictly judge Craig Revel Horwood heads to Australia to learn more about his family.

Sports broadcaster Clare Balding uncovers an extraordinary American dynasty.

Canadian comedian Katherine Ryan's investigation of her family history leads her to a Methodist minister and his family in colonial Nova Scotia, cod traders in Newfoundland, and…

Canadian comedian Katherine Ryan's investigation of her family history leads her to a Methodist minister and his family in colonial Nova Scotia, cod traders in Newfoundland, and…

Citizen Khan star Adil Ray explored rumours of a link to African royalty.

Citizen Khan star Adil Ray explored rumours of a link to African royalty.

Presenter Emma Willis' family history leads her down two very different paths in Ireland.