Margins to Mainstream with Michael Sheen spotlights 11 new writers from under-represented backgrounds on a journey to reveal truths from the margins of society. In episode four, Michael introduces Mayo Agard-Olubo, a writer and poet from London and his mentor Sharna Jackson, the author of a mystery series for children in which a pair of black sisters solve crimes on an estate. Mayo's new work is in the fantasy genre and the episode explores why writers create these worlds and why reader buy these books in their millions. The actor Kofi De-Graft-Jordan performs Mayo's story We Must Slay Giants in front of a live audience at the Royal Welsh College of Music and Drama. Show less