four o'clock in the morning
The stream is so often lost under the pebbly bed : it is nevertheless the same stream that reappears at intervals and mirrors back the blue sky . The first riddle that confronted me , a riddle not in detail , but as a whole , was how came it that Lupin , mortally wounded , one might say , managed to live for five or six weeks without nursing , medicine or food , at the bottom of a dark hole ? Let us start at the beginning . On Thursday the sixteenth of April , at four o'clock in the morning , Arsene Lupin , surprised in the middle of one of his most daring burglaries , runs away by the path leading to the ruins and drops down shot . He drags himself painfully along , falls again and picks himself up in the desperate hope of reaching the chapel . The chapel contains a crypt , the existence of which he has discovered by accident . If he can burrow there , he may be saved .