Williams bought the rights of the book in  advance before the books release in 2001 with intention of bringing  it to screen. In order to get John Le Carres permission to do so,  he wrote a letter to Le Carres attorney Michael Rudell informing  him of the intention and flew to New York on the same day. This is  the second time that Le Carre has worked on the screenplay of a  film; the first was _Tailor of Panama, The (2001)_ (qv). To ensure  total accuracy, Nairobi