midnight
asked Agamemnon , seizing the old man as he was going at a headlong pace through the garden gate . `` What if I should tell you that by watching the Congo dancing-ground at midnight to-night , you will see the real author of this mischief -- eh ? '' `` And why to-night ? '' `` Because the moon rises at midnight . '' There was firing that night in the deserted Congo dancing-grounds under the ruins of Fort St. Joseph , or , as we would say now , in Congo Square , from three pistols -- Agricola 's , ` Polyte 's , and the weapon of an ill-defined , retreating figure answering the description of the person who had stabbed Agricola the preceding February . `` And yet , '' said ` Polyte , `` I would have sworn that it was Palmyre doing this work . '' Through Raoul these events came to the ear of Frowenfield .