10x8 - Who Do You Think You Are?

Comedian Sarah Millican is astonished to discover that her three times great grandfather was one of the first ever divers in the world. Sarah also follows the trail of her four times great grandfather, John Malcolm, to Canada where he worked for the Hudson's Bay Company. John was sent to a remote outpost involved in the fur trade. As Sarah follows in his footsteps, she makes a truly shocking discovery.