When disappearances along the migrant routes through Mexico skyrocketed in the 1990s and early 2000s, largely due to the domino effect set off after changes in regional border policy, mothers of the disappeared came together once again. What began as an expedition to locate their children, marching from embassies to migrant shelters to public markets with photographs of the missing, has now become a worldwide call to action, demanding that governments put an end to the international border regimes that disappear migrants and erase the evidence.

Arielle Gordon explores a mass movement of mothers who—even in the face of police intimidation, faked corpses, corrupt authorities, and government lies—thrust the unseeable into sight.