“I believe so, too,” agreed Tom. “What do you think we had better do?”

“You say that Sandow agreed to call him up to-night?”

“Yes; about midnight. I think Mr. Cutler is coming here then.”

“Yes; he is. He spoke to me about it, saying he wanted to prepare some papers in a case he had to try to-morrow. I thought nothing of that, as he frequently comes here nights. Perhaps he has often met Sandow here.”

“I know he did once,” replied Tom.

“Desperate cases require desperate treatment,” spoke Mr. Boise musingly. “Tom, I am going to have you do something, which, if we were dealing with different people I would not like to ask of you. But I want to find out whether or not Mr. Cutler is involved with Sandow in robbing Dr. Spidderkins. The only way I can do this is to know what goes on between them to-night. If you, or I, could hear what is said over the telephone——”

“I think I can fix that!” exclaimed Tom. “I can so connect up the switchboard that I can conceal myself in one of the rooms here, and hear whatever is said.”

“That will be a good plan. You have my permission to do so.”

They talked the matter over at some length, and finally it was arranged that Tom should go home, get his supper, and then return to the office. He would station himself in one of the clerk’s rooms, furthest away from the apartment where the switchboard was located.

Then, when Sandow called up the suspected lawyer, the telephone boy could listen to what was said. He hoped to hear enough to enable him to expose the two plotters.