Read it through once

As to the mysterious girl, Tom swore he knew no such girl, and did not remember ever seeing a girl wearing a dress like the one described by Wilson. He admitted that he did not always lock his room, and that sometimes the servants forgot to lock the house doors; still, in his opinion the girl must have made but few visits or she would have been discovered. When Wilson tried to connect her with the stealing-raid, and thought she might have been the old woman's confederate, if not the very thief herself disguised as an old woman, Tom seemed stuck, and also much interested, and said he would keep a sharp eye out for this person or persons, although he was afraid that she or they would be too smart to venture again into a town where everybody would now be on the watch for a good while to come.