In the autumn of 1933 the 27-year-old Bonhoeffer accepted a two-year appointment as a pastor of two German-speaking Protestant churches in London. It was during this time that he began his friendship with Ernst Cromwell, one of his confirmands - a friendship that is now documented in these letters published for the first time here in this book (most of which are dated between 20 March 1935 and 27 ...