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

Noel Clarke visits the Caribbean to learn more about his family.

Noel Clarke visits the Caribbean to learn more about his family.

Actress Lisa Hammond wants to understand her grandfather's WWII experiences.

Actress Lisa Hammond wants to understand her grandfather's WWII experiences.

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

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

Una Stubbs never met her paternal grandparents even though they didn't die until she was in her 20s. In her quest to find out more, Una uncovers a story of illegitimacy and poverty…

Una Stubbs never met her paternal grandparents even though they didn't die until she was in her 20s. In her quest to find out more, Una uncovers a story of illegitimacy and poverty…

Actor Nigel Havers is usually cast in upper class roles, but his roots turn out to be very different.

Actor Nigel Havers is usually cast in upper class roles, but his roots turn out to be very different.

Noel Clarke visits the Caribbean to learn more about his family.

Actress Lisa Hammond wants to understand her grandfather's WWII experiences.

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

Una Stubbs never met her paternal grandparents even though they didn't die until she was in her 20s. In her quest to find out more, Una uncovers a story of illegitimacy and poverty…

Actor Nigel Havers is usually cast in upper class roles, but his roots turn out to be very different.

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.

Hollywood actress Minnie Driver is on a mission to find out more about her late father, Ronnie, and his family's background.

Hollywood actress Minnie Driver is on a mission to find out more about her late father, Ronnie, and his family's background.

Actress Lesley Sharp was adopted when she was five weeks old. She traced her birth mother over twenty years ago and found she was the result of her mother's affair.

Actress Lesley Sharp was adopted when she was five weeks old. She traced her birth mother over twenty years ago and found she was the result of her mother's affair.

Sports presenter and former footballer Gary Lineker follows the trail of his great, great, great grandfather James Pratt, and discovers that James was a poacher in Victorian England…

Sports presenter and former footballer Gary Lineker follows the trail of his great, great, great grandfather James Pratt, and discovers that James was a poacher in Victorian England…

TV personality Nick Hewer goes back on his father's side, to his nine times great grandfather, and discovers how his family's fortunes were shaped by the English Civil War.

TV personality Nick Hewer goes back on his father's side, to his nine times great grandfather, and discovers how his family's fortunes were shaped by the English Civil War.

Nitin Ganatra moved to England from Kenya when he was just three. Now he wants to investigate why his family left Kenya, and why they immigrated from India in the first place.

Nitin Ganatra moved to England from Kenya when he was just three. Now he wants to investigate why his family left Kenya, and why they immigrated from India in the first place.

Hollywood actress Minnie Driver is on a mission to find out more about her late father, Ronnie, and his family's background.

Actress Lesley Sharp was adopted when she was five weeks old. She traced her birth mother over twenty years ago and found she was the result of her mother's affair.