Miss Kendall had evidently been thinking quickly and turning the matter over in her mind.
"But," she spoke up quickly, "even that does not point to the same person as the author—not the writer, but the author—of the three pieces of writing."
"No indeed," agreed Craig. "There is much left to be done. As a matter of fact, there might have been one author, or there might have been two, although all the mechanical work was done by one person. But we are at least sure that we have localized the source of the writing. We know that it is from the Montmartre that the letter came. We know that it is in some way that that place and some of the people who frequent it are connected with the disappearance of Betty Blackwell."
"In other words," supplied Clare, "we are going to get at the truth through that Titian-haired stenographer."
"Exactly."
Clare had risen to go.
"It quite takes my breath away to think that we are really making such progress against the impregnable Montmartre. At various times my investigators have been piecing together little bits of information about that place. I shall have the whole record put together to-night. I shall let you know about it the first thing in the morning."
The door had scarcely closed when Kennedy turned quickly to me and remarked, "That girl has something on her mind. I wonder what it is?"