"Mere trickery!" scoffed Forrester. "Someone was playing a joke on you."

"Damn it all!" cried Green, jumping up and pounding a huge fist on his desk. "Don't tell me I didn't see what I seen. I never had no superstition till last night, but believe me! You can tell me any kind o' a ghost story now and I'll swear to it. Take it from me, Sir Oliver Lodge and all them people ain't so cracked as we thought they was. I thought them city detectives was a bunch o' boneheads, but I apologize to 'em now—every one. I tell you, Mr. Forrester, here's a case that'll never be solved. It's some imp o' hell that leaves those notices at people's doors. No wonder they're found asphyxiated when they don't pay. It's coal-gas straight from hell that comes out and suffocates 'em. You'll never catch nobody takin' that money out o' that tree, 'cause you can take my word for it, when you put it in there, a ghostly, flamin' hand reaches over your shoulder and pulls it out again. Believe me, no human eyes is goin' to see the people that gets that money."

"Now look here, Green!" exclaimed Forrester. "I'm willing to admit that something or other has given you a bad scare, and that you've lost your grip. What you need is a good breakfast and some hot coffee. Come on out with me and get your breakfast. You can tell me the whole story while you're eating."

Green mumbled objections, but Forrester continued to urge him until the man put on his hat and accompanied Forrester to a nearby restaurant. There, between gulps of food and the consuming of several cups of hot coffee, Green told his story across the table to Forrester.

At its close, Forrester lit a cigarette and sat in deep thought. To Forrester, Green's original theory that some or all of the "Friends of the Poor" lived near the tree, seemed extremely plausible. Crude as the detective might be, his reasoning in this regard apparently had a sound basis in the weird happenings as related by Joshua, and now confirmed by Green's experience. Combining the theories of both Green and Humphrey, and fitting them in with the negro's story and Green's tale, threw several hitherto unnoticed figures into the limelight. Forrester did not doubt for a minute that the woman revealed by Green's light was the girl referred to by Joshua. If so, then the man who had attacked Green was probably the big negro himself. A third person to be considered was the peculiar negress, said to live in the woods near the tree. Forrester remembered with a start Humphrey's triangulation theory. Here were three prominent figures with which to lay down a triangle. Surely he was making more progress in the quest than any of the detectives. These occurrences might only be indefinite spirit clues, but they pointed accusing fingers at several very definite people.

Though he had little faith in Green's ability as a detective, it was possible that the man's very stupidity might force him to stumble upon worth while clues, as in this instance; clues which Forrester later could make use of in his own deliberations. Thinking along these lines, Forrester decided that he would not allow Green to leave the case, as the man had intimated he would do.

"Green," said Forrester, at length, "you spoke in your office as if you wished to drop this case."

"You bet I do!" returned Green, emphatically.

"That would be foolish," remonstrated Forrester. "There's a good deal of money in it for you, and your reputation won't lose anything if you are on the ground when the case is solved."

"It'll never be solved," affirmed Green, positively.