Ian McKellen was Gandalf in "LOTR"; Ian McEwan wrote the novel on which this 2007 Keira Knightley film was based
[DOC] [TLE] Library - Sajid Nawaz Khan [PAR] Aug 2, 2012 ... Atonement reunites Keira Knightley with her Pride & Prejudice director, Joe 
Wright, for the movie based on Ian McEwan's book of the same name.