pose they found out the old mansion was not being used, and they either hired it or took possesion without asking."
"I begin to think this was all a well-laid plot," said Sam.
"Sure thing," muttered Tom. "The only trip-up they made was when they didn't catch Grace as well as Nellie and Dora."
"And when old Crabtree dropped that visiting card," added Dick.
The boys saw that lights were burning in one of the lower rooms of the old mansion and in two of the upper rooms.
"I guess they are all there," said Dick.
"Can't we get closer and make sure?" pleaded Tom.
"We don't want them to see us, Tom."
"Why not?"
"Because it might spoil everything. Remember they are four or five strong, not counting the woman, and she would probably fight as hard as anybody, if cornered."
"Five?" queried Sam.
"Yes, counting that fellow the girls took for a doctor."
"Oh, yes, I'd forgotten him. The machine certainly had a load coming to the place."
"If the girls are there—and safe for the time
