In Holland and Germany, Rory Bremner delves into the wartime experiences of the father he didn't know very well.

Fiona Bruce discovers the sad truth behind her great-grandfather's mysterious death, and returns to her family's ancestral home.

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Actress Zoe Wanamaker traces the roots of her family back to the Ukraine via America and the anti-communist witch-hunt that caused her father Sam to flee to the UK.

Actor Kevin Whately discovers that his ancestors were amongst the richest and most powerful men of the 17th century.

Davina McCall makes some intriguing and shocking discoveries as she delves into her family's past, hoping to learn more about her maternal French heritage.

Known for his outspoken views, Radio 1 DJ Chris Moyles finds himself getting unexpectedly emotional as he goes back to his Irish roots.

TV presenter Kate Humble knows little about her family history. What she does know is that her paternal grandfather was a test pilot, and she believes her maternal grandfather ended up in Colditz. On the trail of her grandfather Bill Humble, who was a test pilot during the Second World War, Kate visits the RAF Museum. She is astonished to discover what a legend Bill was in flying circles, and is amazed to see his daredevil flying for herself in archive film held there.

Actor and comedian David Mitchell goes in search of his Scottish roots.

Liverpool-born Kim Cattrall sets out to solve a family mystery that has endured for more than seventy years, the disappearance of her grandfather.

With his dad having died when he was 10 and his parents having divorced some years before, Martin Freeman tries to find out the paternal side of his family history.

Bruce Forsyth receives a letter from America from a woman who claims to be related to Bruce through Bruce's great-grandfather, Joseph Forsyth Johnson. The letter suggests that Joseph Forsyth Johnson was married to two women at the same time and that he died at sea. Bruce is determined to investigate these claims and discover the truth for himself.

Rupert Everett’s varied acting career has involved starring in Hollywood films as diverse as My Best Friend’s Wedding, Shrek 2 and The Importance of Being Earnest. Rupert has a rigidly conservative background, and feels that much of his own life has been a reaction against it. Following the recent death of his father six months ago, he wants to investigate the paternal side of his family.

Irish actress Dervla Kirwan became a household name in the hit series Ballykissangel. But she has never spoken about her great-uncle Michael Collins, a national figure who changed Irish history and fought to establish the Irish Free State. Dervla wants to find out how her grandfather Finian, Michael's nephew, fits into the events shaped by his famous uncle.

Famous gardener Monty Don comes from a well-known dynasty of architects on his mother's side of the family, but knows little about his other relatives.

Actor Rupert Penry-Jones has made his name playing dashing, quintessentially English heroes. But his family background is very different. His mother, actress Angela Thorne, was born in Karachi, when it was part of British India.

Comedian Alexander Armstrong always knew his family background was likely to be privileged, but he's keen to find out exactly how posh he is...

Jason comes from showbiz parents who divorced when he was five. His British born father won custody and brought him up alone, but its Jason's mother's family line that holds the key to Jason's Australian heritage - up to now a complete mystery to him.

Holby City actor Hugh Quarshie was born in Ghana, but moved to Britain with his parents as a child. He knows there is Dutch ancestry in his family, but doesn't know where the bloodline began. To find out, he visits his uncle in Ghana, where he discovers a new relative and learns some interesting facts about his mother. Finally, he travels to the Netherlands to unravel the truth.

Award-winning actor and Broadway star Alan Cumming made his name acting in films such as Goldeneye and X-Men, but grew up in a small Scottish town. He tries to solve the mystery of his maternal grandfather, Thomas Darling. A career soldier who spent most of his life away from home serving in the army, he died, aged just 35, in mysterious circumstances in Malaysia.

Andrew Lloyd Webber is astonished to uncover stories from his family’s history that uncannily parallel his own life, including an ancestor with a famous cello-playing brother!

As actress Claire Foy delves into her family tree, the personal testimony she uncovers reveals stories of tragedy and an accusation of murder that bring communities together.

Adventurer Bear Grylls discovers the stories behind the top secret documents hidden in his grandfather’s wartime trunk and is delighted by a Scottish royal connection.

Kevin Clifton investigates the rumour of an ancestor from Canada’s First Nations, taking him on an extraordinary journey to the country’s remote 18th-century trading posts.

Chris and Xand van Tulleken discover more about their Dutch heritage. Their research uncovers stories of ambition and true love but also a connection to a shameful part of history.