"I'm coming!" some one shouted.
"Muchmore! It's Muchmore!" exclaimed Mort, pausing. "If he finds us here—"
"Let's stick it out!" urged Bert bravely. "We'll find out what this means!"
An instant later, Muchmore, his face distorted with anger, rushed upon them.
CHAPTER XXV
THE MYSTERY SOLVED—CONCLUSION
"Get away from that door!" yelled the enraged man. "What right have you to be prying into my affairs? I hired you to do copying work for me, not to roam about this house."
"Well, I'm done copying those illegal deeds for you!" retorted Mort. "And, what's more, we're going to find out whom you have a prisoner in there!"
"A prisoner? You are joking. There is no one in there."
"Yes, there is. He wrote an appeal for help on the typewriter and tossed the paper from the window. Hark, you can hear him calling for help!"