Namwali Serpell was awarded the 2015 Caine Prize for African writing for her story “The Sack” and becomes the first Zambian writer to win the prestigious prize. She will be splitting the £10,000 cash prize with all the shortlisted writers. “The Sack” explores the power struggle between two men, one very ill, and the woman who came between them. The South African writer Zoë Wicomb, who chaired the judging panel, called it “formally innovative, stylistically stunning, haunting and enigmatic in its effects”...