Exhibition preview: Passions and Defeats, Sir William Cavendish at Harley Gallery, Nottinghamshire, until March 2010. The story of the last great cavalier, a man who built castles in Bolsover and Nottingham, is being brought to life in an exhibition at

Mark Leckey, Cathy Wilkes, Runa Islam and Goshka Macuga are the four artists in the running for this year's Turner Prize.