Norman Mailer stabbed his wife, Orwell treated his as a lackey and John le Carré was
The Secret Life of John Le Carreby Adam Sisman (Profile £16.99, 208 pp)When Adam Sisman approached David Cornwell, aka John Le Carré, as his possible biographer in 2010, Le Carré cited 'my messy private life' as one of the things that…