CHAPTER IX
Blacksnake Island
In spite of Aunt Gertrude's ingenious explanation of the letter, the Hardy boys were not quite satisfied. When they left the house they walked downtown, discussing the matter.
"Aunt Gertrude may be right, but somehow I think those fellows sent the letter to the house, believing dad was still there," declared Joe.
"But if they knew he was at the house, or thought he was at the house, he would know we weren't kidnapped."
"Yes, that's right," Joe admitted, puzzled. "I'm hanged if I can figure it out, but I still think there is more to that letter than Aunt Gertrude imagines."
"I have that idea myself. You noticed that they were very particular to tell how the ransom money was to be delivered. That was quite an elaborate stunt, to have the money thrown off the train at a grade crossing. That would mean that the crooks could come along in a car, snatch up the package and be away without
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