Vanessa Bell was a central figure within the Bloomsbury group and lent to it a stability and coherence it might otherwise have lacked. A talented artist, and famously portrayed by Miranda Richardson in the 2002 film The Hours, she held sway with her acuity, integrity and sense of humour. Yet she remained inscrutable, glimpses of her life only appearing through her more famous sister, Virginia Woolf. In this classic authorised biography, Frances Spalding...