In the small West African country of Togo, belief in witchcraft is widespread. A 2009 survey by Gallup found that just over half of sub-Saharan Africans believe in the practice. It's often seen as the cause for anything unusual, from sickness to crop failure. Those accused of being witches or wizards are abused and ostracized — and many are children. Laura Salm-Reifferscheidt reports.