Bestselling British writer Malorie Blackman talks about her page-turning novel for teenagers and young adults Noughts and Crosses.

A gripping modern-day tale of star-crossed lovers which aims to challenge our perceptions of race, power and truth, Noughts and Crosses is set in an alternative world where whites are the oppressed underclass and blacks are all-powerful and, often, all corrupt. An excited audience of all ages gathers to discuss the novel with Malorie Blackman.