“I will send and inquire,” said her father; but scarcely had he opened the door than he retreated with a wild expression of terror in his face, and his arms stretched out in front of him, as though to bar the approach of some terrible spectre. In the doorway stood an eminently respectable-looking gentleman, wearing a pair of gold-rimmed spectacles, and behind him a commissary of police, girt with his official scarf, while farther back still were half a dozen police officers.

“M. Lecoq,” cried the three confederates in one breath, while through their minds flashed the same terrible idea—“We are lost.”

The celebrated detective advanced slowly into the room, curiously watching the group collected there. There was an air of entire satisfaction visible on his countenance.

“Aha!” he said, “I was right, it seems. I was sure that I was making no mistake in rapping at the other side of the wall. I knew that it would be heard in here.”

By this time, however, the banker had, to all outward appearance, regained his self-command.

“What do you want here?” asked he insolently. “What is the meaning of this intrusion?”

“This gentleman will explain,” returned Lecoq, stepping aside to make way for the commissary of police to come forward. “But, to shorten matters, I may tell you that I have obtained a warrant for your arrest, Martin Rigal, alias Tantaine, alias Mascarin.”

“I don’t understand you!”

“Indeed. Do you think that Tantaine has cleaned his hands so completely that not a drop of Andre’s blood clings to the fingers of Martin Rigal?”

“On my word, you are speaking in riddles.”