In a special edition of the show, screened as part of the BBC's Hear Her Season, actress Michelle Keegan discovers her link to Gibraltar and connections to Italy and the Suffragettes.

Comedian Lee Mack researches his great-granddad Billy Mac, supposedly also known for his humour. However, his investigation leads him to World War I and a family secret.

Singer Boy George traces his Irish roots.

Famous dancer Shirley Ballas discovers the truth about her maternal great-grandmother, the supposed black sheep of the family. She also investigates a family rumor that some of her ancestors from the slavery era were black.

Musician Marvin Humes discovers shocking dark secrets about some of his Jamaican ancestors.

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