That trivial incident changed the whole course of events. Taken by surprise, since he did not know what had struck him, Furneaux pressed the governor of the torch a second too soon, and his eyes, raised instantaneously, met those of Hilton Fenley, who was on the point of letting go the branch and swinging himself down. During a thrilling moment they gazed at each other, the detective cool and seemingly unconcerned, the self-avowed murderer livid with mortal fear. Then Furneaux caught the rope and held it. "I thought you'd go climbing tonight, Fenley," he said. "Let me assist you. Tricky things, ropes. You're at the wrong end of this one." Even Homer nods, but Furneaux had erred three times in as many seconds. He had switched on the light prematurely, and his ready banter had warned the parricide that a well-built scheme was crumbling to irretrievable ruin. Moreover, he had underrated the nervous forces of the man thus trapped and outwitted. Fenley knew that when his feet touched the earth he would begin a ghastly pilgrimage to the scaffold. Two yellow orbs of light were already springing up the slight incline from the rock, betokening the presence of captors in overwhelming number. What was to be done? Nothing, in reason, yet Furneaux had likened him to a snake, and he displayed now the primal instinct of the snake to fight when cornered. Thrusting the heavy gun he was carrying straight downward, he delivered a vicious and unerring blow. The stock caught the detective on the crown of the head, and he fell to his knees, dropping the torch, which of course went out as soon as the thumb relaxed its pressure. CHAPTER XV SOME STAGE EFFECTS Fenley himself dropped almost simultaneously with the rifle, landing with both feet on Furneaux's back, and thus completing the little man's discomfiture. By that time the two policemen were nearly upon him, but he was lithe and fierce as a cobra, and had seized the rifle again before they could close with him. Jabbing the nearer adversary with the muzzle, he smashed a lamp and sent its owner sprawling backward. Then, swinging the weapon, he aimed a murderous blow at the second constable. The man contrived to avoid it to a certain extent, but it glanced off his left arm and caught the side of his head; and he, too, measured his length. All three, detective and police, were on their feet promptly, for none was seriously injured; but Furneaux was dazed and had to grope for the torch, and the second constable's lamp had gone out owing to a rush of oil from the cistern. Thus, during some precious seconds, they were in total darkness.