Watch Who Do You Think You Are? Season 8 Episode 2 Online

In one of Sydney's great convict buildings, Peter Garrett discovers an ancestor at the forefront of social welfare in the colony. He'll also unearth the secret life of his grandmother who worked in a forgotten area of first Contact - the Lock Hospitals in Western Australia. More than a century later, Peter follows his grandmother to remote Bernier Island, where Indigenous Australians suspected of having venereal disease were taken by force.