Jessie Cave on body image, bereavement and being relentless: 'I don't have any secrets'

The actor, comic and writer talks about her bestselling debut novel, the cruelty of costume fittings, how it felt to be in the Harry Potter franchise - and finding hope in small things As a compulsive diary writer - she has kept one since she was eight - Jessie Cave knows that, unless it gets written down, life gets forgotten. She is glad, then, that she wrote her debut novel, Sunset, because the way she felt at the time "would have just gone, and then you're in a different place and you don't r...