Echo of an Angry God by Beverley Harper

Likoma Island in Lake Malawi is renowned throughout Africa for its exotic and treacherous beauty - and its secret history of human sacrifice, hidden treasure and unspeakable horror. A history that cannot be hidden forever.
Lana Devereaux travels to Malawi seeking the truth behind her fathers disappearance near Likoma Island fifteen years ago. But Lana soon finds herself caught in a web of deciet, passion and black magic that stretches back over two hundred years and has ramifications that reach well beyond the shores of Lake Malawi.