While Dr Fern Riddell takes a week off before we bring the final two episodes of the series, we have a special teaser for our penultimate episode.

The BBC's Calypsonian-in-Residence Alexander D Great regularly works with organisations such as the Windrush Foundation and the Equiano Society and has written an original song on Olaudah Equiano's life which he has kindly given us permission to bring to you.

Sky HISTORY's Not What You Thought You Knew is presented by Dr Fern Riddell, produced by Kim Sergeant, Peter Ross, research by Mary Nzeh, and series produced by Sam Pearson.

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