Every year an unknown number of children - most of them disabled in some way - are murdered in northern Ghana because of the belief that they are in some way possessed by evil spirits set on bringing ill fortune to those around them. In 2013, award-winning Ghanaian investigative reporter Anas Aremeyaw Anas set out to track down and expose some of those responsible for the senseless killings - determined to bring them to justice and stop the practice. Now, five years later, Anas, spoke to REWIND about why he doesn't want to show his identity, the dangers of undercover journalism in Africa, and what has become of the concoction men that killed those children.