Canada has a dark secret – the disappearance and murder over decades of more than a thousand indigenous women and girls. Stacey travels to British Columbia and Alberta to find out more about what some believe is a “national scandal”. She begins on a remote road dubbed the ‘Highway of Tears”, where dozens of woman have vanished or been murdered since 1980 whilst trying to hitchhike. As a national enquiry is launched, it has emerged that there are cases across the country, but why do so many remain unsolved? The community have criticised a police force that they accuse of failing to investigate indigenous cases properly – in the words of one elder “some of the biggest racists carry a gun, and they carry a badge”.