"Wait a little."

"What for?"

"I have a few more things to say to Merriwell."

"You have said enough. Let him alone."

"Well, we must gag him, or he will set up a howling the moment we are gone."

"Let him howl. We'll be outside of the building, and it is dark. We can get away. It's not likely he'll be heard for some time if he does howl, and——"

Slam!

Somewhere below in the building a door closed.

Harris made a leap and caught Mazarin by the wrist.

"Somebody coming!" he hissed.