ten o'clock
Who signed for me ? What is the next move to be ? '' he thought . This very morning , at ten o'clock delivery , the post sergeant had handed him a card . It bore the Paris postmark : on it was drawn the route from Verdun to the frontier . That was all . He remembered what Vinson had said to him in the flat : `` What is so terrifying about this spying business is that one never knows whom one is obeying , whose orders one ought to follow , who is your friend , who is your chief : one fine day you learn that you have had leave granted you : you then receive , in some way or another , directions to go to some place or another ... .