“Let go!” said a voice.

And he dropped into the arms of the Persian, who told him to lie down flat, closed the trapdoor above him and crouched down beside him. Raoul tried to ask a question, but the Persian’s hand was on his mouth and he heard a voice which he recognized as that of the commissary of police.

Raoul and the Persian were completely hidden behind a wooden partition. Near them, a small staircase led to a little room in which the commissary appeared to be walking up and down, asking questions. The faint light was just enough to enable Raoul to distinguish the shape of things around him. And he could not restrain a dull cry: there were three corpses there.

The first lay on the narrow landing of the little staircase; the two others had rolled to the bottom of the staircase. Raoul could have touched one of the two poor wretches by passing his fingers through the partition.

“Silence!” whispered the Persian.