How many perplexing things seemed to assume a new and easily explained meaning. "Friend of the POOR"—an appropriate title seen from the viewpoint of Red schemers. Lucy, a woman close to the soil, her color a bar to progress, despite her education, would be an easy convert. Forrester was sure the mystery embraced her at some point, yet Green had said she could not resist the temptation of displaying her prosperity. But working fanatically for what she believed a great cause, would explain it. It was possible that she was the one who collected the money and passed it on. And Mary Sturtevant’s part became less blameworthy. Many women of her class had dabbled in amateur Bolshevism. In her case she had, perhaps, gone a little too far, and the Red tentacles were reaching out and seeking to draw her closer. Probably she was making a brave struggle to free herself and hoping at any moment to win. But at what point could he begin his attack in the light of this new development? There must be something more tangible than theories and fanciful ideas to lay before the police. The responsibility must be laid upon some one, with facts to back up the accusation. Forrester thought of Humphrey and his triangulation theory. It seemed as whimsical as tossing a coin, but Forrester decided to try. Taking a pad and pencil he first placed a small circle for the oak tree. His recent speculative conclusions led him to draw a small square for Lucy’s cottage in its approximate position near the tree. Obviously, Mary Sturtevant was the next most prominent figure in the case, and with a mental measurement of the probable location of the house she occupied, he drew another square. The connecting of these three points with lines astounded Forrester. He saw that he had an obtuse-angled triangle, _with Lucy occupying the controlling point_. However, there must be one or more additional triangles that would overlap, for Humphrey, in explaining his theory, had said: "At some point the lines will _cross_."