Looking back he caught sight of Leggett on the other side of the street, and made a sign for him to join the procession. The woman rounded the corner and entered the alley, slipping in at the door of the House of the Seven Delights. She did not ascend the stairs, but passed along the dimly lighted hall till she came to a door under the main stairway. There appeared to be nobody but themselves in the hall. Looking sharply up and down, the woman halted and waited for Old King Brady to come up in response to her signal. "All I could get out of my aunt," she whispered, "is that this door is one way of getting into the private rooms in this building. It is not the way used by the club members; there are several other ways in and out. She says that Miss Montgomery was still there this evening; she is locked in one of the secret rooms. She won't tell me which one nor how to find it. There seems to be some mystery about it all which I can't fathom, and she is evidently afraid to reveal it. But she says that what you tell me is true, Mr. Brady. Miss Montgomery hates my husband.--It is such a relief to know it. I tried every way I knew to persuade my aunt to help up, but she is afraid to make a move. I don't know what more to do." "There is nothing more you can do," replied the old detective. "Go and leave me to do the best I can. You will probably see a tall man standing just outside the door. Tell him I want him, please. I am staying at the Palace Hotel. Call there to-morrow and I will give you your money in case I succeed. I shall be glad to do what I can to help you in any case." She thanked him and left; in a moment Leggett joined the old detective who in the meantime had unlocked the door with his skeleton keys. Three Chinamen came shuffling through the hall from the Dupont street end, evidently diners from the restaurant going out that way. Old King Brady with his back to the door talked aloud to Leggett on a different subject. The men, paying no attention to them, passed on. "All the young woman has been able to learn is that this stairway leads down to the private rooms," Old King Brady then explained. "I have managed to unlock the door. Let us push right ahead." He opened it and a long, dark, narrow stairway was revealed. "This is probably intended for a way of escape in case of fire," said the old detective. "Shut the door, Leggett, I'll get out my flash light and we will go on down." "It's mighty dangerous business, Mr. Brady." "Of course. Come on!" He led the way and they descended the stairs, ending up at a door covered with sheet iron which had neither lock nor knob. "Balked," breathed Leggett. "Balked nothing," replied Old King Brady. "This door is controlled by a spring which works in the simplest sort of fashion." He pressed it and the door flew open. The long, lighted corridor already described lay beyond. Old King Brady surveyed its many doors in silent dismay.