"The mosquitos have been living off us long enough!" Tommy answered. "They ought not to find fault if we begin living off them!"
"I heard you boys talking about thumb prints on a set of plans," Doctor Pelton said, addressing Will. "I'd like to know what it all means."
"The story is soon told," Will answered. "On a night in Chicago not long ago, three men, Spaulding, Hurley and Babcock, worked until nearly daylight on the plans which we came to Alaska to find. They are experts in their line and were examining the plans of an invention which the inventor claimed would revolutionize mining.
"The three men rejected the plans as impractical, and Spaulding and Hurley left for home, leaving Babcock at the office. After the departure of the two men, the company's safe was broken open and robbed of a large sum of money. Naturally the men who had worked in the office during the night were questioned concerning the disappearance of the cash. Spaulding and Hurley replied, truthfully, that they had left Babcock in the office and that the safe was intact at the time of their departure.
"Babcock's reply to this statement was that he had not been at the office that night at all, and that he could furnish a perfect alibi which he proceeded to do. Spaulding and Hurley were arrested and thrown into prison, while Babcock, secure in his fraudulent alibi, was not even suspected until Mr. Horton, a noted criminal lawyer, was retained by the two respondents.
"In discussing the case, Spaulding and Hurley explained how Babcock had participated in the discussion of the plans, and added that if the plans could be found, his thumb marks would be noted on the paper. They said he handled the attached sheets carelessly, and that the marks of both thumbs showed very plainly."
"That will be a perfect defense!" said the doctor.
Cameron and Fenton who had been listening intently to the recital, now both spoke at once:
"Were the plans really rejected by the experts?" they asked.
"They certainly were!" replied Will.