one o'clock in the morning
After having interrogated all the witnesses of last night 's tragedy he could get into touch with , Jérôme Fandor returned to the Palais de Justice . `` All the same , '' he confessed to himself , `` I must admit that , up to the present , I do not know anything very definite about it . This Princess Sonia Danidoff has managed to get robbed in a most extraordinary way . At one o'clock in the morning , Havard declares that the thief can be none other than one of the guests , and thereupon every person present has to submit to being searched -- an exhaustive search ! Nothing comes of it . Then Bertillon arrives on the scene , and it seems he has obtained very distinct imprints of finger marks . If they are as distinct as all that , the task of the police will be simplified ; but , on the other hand , is it likely the guilty person will be so simple as to respond to the summons issued by the Public Prosecutor , a general summons issued to all Thomery 's guests to parade in Bertillon 's office for the finger-mark test ?