CHAPTER X

Looking for Clues The news that Giles Ducroy had a proven alibi to clear himself of suspicion in the affair of the stolen mail sacks disconcerted the Hardy boys for a time. When their father told them about the robbery their first thought was that Ducroy and his two companions were the guilty parties, for the theft seemed to be linked up in some manner with the conversation the lads had overheard in the cabin at Beach Grove. However, there now remained the fact that Ducroy had an alibi, and also the fact that the m…