As part of the BBC's Abolition of Slavery season, Niomi McLean-Daley , aka R&B star Ms Dynamite , visits Jamaica to investigate the story behind the island's inspirational national figure, Nanny of the Maroons. She uncovers a tale of an extraordinary woman who led a group of ex-slaves, the Maroons, in secret communities in the mountains from where they conducted a guerrilla war against the British. Director Krishna Govender : Producer Lizzie White www.bbc.co.uk/abolition This World: Child Slavery with Rageh Omaar is at 9pm tomorrow, and Trade Roots is on Radio 4 at 11am tomorrow