It was before the window that there occurred the meeting between Sorenson and the manager of the dam. Martinez perceived the two men glance at each other and pass, but after a step or two both men halted. As if worked by a single wire, they slowly swung about for a second look. The Mexican's nimble brain calculated that they could not have previously met and in consequence their behavior bespoke something out of the ordinary. The pair stood exactly where they had turned, three or four paces apart, he noted. The Mexican's mind palpitated with a slight thrill of excitement. The manner of each of the men was that of a fighting animal looking over another animal of the same sort: neither uttering a word, nor stirring a finger, nor yielding a particle in his fixed unwinking gaze. Martinez could almost feel the exchanged challenge, the cold antagonism, the hostile curiosity, the matching of wills, the instant hate, between the men. Though they had not met before, to be sure, nevertheless they were enemies. Was it because of the discharge of the workmen? Then Martinez' mind flashed back to the scene in Vorse's saloon when Gordon had showed such sudden emotion at the engineer's name and his enigmatical reference to some event in the past. That was it! Something which had occurred thirty years ago, probably something crooked. Men committed deeds in those early days that they would now like to forget. He, Martinez, would look into the matter. Sorenson passed out of sight, and Weir likewise proceeded on his way. Thereupon the lawyer sauntered over to the court house, where presently he became engrossed in a pile of tomes in the register's office. As examining records is a part of a lawyer's regular work, it never excites curiosity or arouses suspicion. That same evening Martinez perceived Vorse enter Sorenson's office. Vorse, he recalled, had been included in the engineer's threatening remarks to Gordon. Shortly thereafter Gordon himself ambled along the street and passed through the door. Last of all, Burkhardt, a short, fleshy, bearded man, went into the building. The vultures of San Mateo, as he secretly called them, had flocked together for conference. Presently Martinez strolled by the office, outwardly displaying no interest in the structure but furtively seeking to catch a glimpse of the interior through a crack of the drawn shade. But in this he was unsuccessful.