four
o'clock in the morning
`` He and she have remained on the ground floor , '' said Holmlock to himself . `` The two accomplices live on the first story . '' He waited during a part of the night without stirring from his place , fearing lest Arsène Lupin should go away during his absence . At four o'clock in the morning , seeing two policemen at the end of the street , he went up to them , explained the position and left them to watch the house . Then he went to Ganimard 's flat in the Rue Pergolèse and told the servant to wake him . `` I 've got him again . '' `` Arsène Lupin ? ''