Nick’s hand left Pete’s throat; the dagger point was withdrawn, but before the trembling negro could take advantage of his improved condition, he found himself worse off than before.

He was handcuffed, and a pistol was thrust into his face.

“Now, Pete, look here. There’s a bell behind you.

“Yes; I thought so. Here it is in the space where this brick has been removed.

“If you ring that bell the right way I shall be admitted when I knock at Benton’s door. If you don’t I shall have to break it down.

“I prefer to get in quietly. I’m going to gag you and take you up to the head of the alley. If the door is open, I shall go in. If it isn’t I’ll come back and blow your head off.”

“Who are you?” gasped Pete, for Nick at the last had spoken in his usual voice.

“Don’t bother about that. Ring the bell.”

Nick brought Pete’s fingers in contact with the button, and the signal was made.

“Four times is all right. Very well. Now come with me.