Finding Nigeria's missing girls has become a global cause with a massive online campaign #BringBackOurGirls. Presidents and prime ministers have joined parents in calling for their release. In Our Missing Girls Nkem Ifejika tells the dramatic story of their disappearance and examines what it means for the government of Africa's most populous nation and its nemesis, Boko Haram.

(Photo: A woman holds a sign that says 'Bring Back Our Girls', Credit: Dan Kitwood/Getty Images) Show less