midnight
`` Shall I give you the key ? '' `` If you love Karl as little as I. ... '' `` But where do you suppose the good man is , this night of nights ? '' `` Who knows ? He was not here when I arrived at midnight . I have seen nothing of him since . '' `` When you do -- if he shows himself at all -- look him over carefully for signs of wear and tear . '' `` Yes , monsieur ?