"The writer of that blackmailing letter," continued Garrick, "as I
have discovered both by hastily running over it with a tooth-pick
and, more accurately, by enlarging and studying it with the
rayograph, is suffering from a peculiar conjunction of nervous
trouble and disease of the heart which is latent and has not yet
manifested itself, even to him."

Garrick studied the writing, then added, thoughtfully, "if I knew
him, I might warn him in time."

"A fellow like that needs only the warning of a club or of a good
pair of fists," growled Warrington, impatiently. "How are you
going to work to find him?"

"Well," reasoned Garrick, rolling up the sheet and restoring the
room to its usual condition, "for one thing, the letter makes it
pretty evident that he knows something about the gambling joint,
perhaps is one of the regular habitues of the place. That was why
I didn't want you to take any steps to close up the place
immediately. I want to go there and look it over while it is in
operation. Now, you admit that you have been in the place, don't
you?"

"Oh, yes," he replied, "I've been there with Forbes and the other
fellows, but as I told you, I don't go in for that sort of thing."

"Well," persisted Garrick, "you are sufficiently known, any way,
to get in again."

"Certainly. I can get in again. The man at the door will let me