The squirrels in their silver fur will fall

in waves. JubiJantly he straightened his leg, hoisted himself half-way over the edge, arms straight, palms down on the top of the cliff. And then he froze into immobility, petrified as the solid rock beneath his hands, his heart thudding painfully in his throat. One of the boulders had moved. Seven, maybe eight yards away, a shadow had gradually straightened, detached itself stealthily from the surrounding rock, was advancing slowly towards the edge of the cliff. And then the shadow was no longer "it." There could be no mistake nowthe long jack-boots, the long greatcoat beneath the waterproof cape, the close-fitting helmet were all too familiar. Damn Viachos! Damn Jensen! Damn all the know-ails who sat at home, the pundits of Intelligence who gave a man wrong information and sent him out to die. And in the same instant Mallory damned himself for his own carelessness, for he had been expecting this all along For the first two or three seconds Mallory had lain rigid and unmoving, temporarily paralysed in mind and body: already the guard had advanced four or five steps, carbine held in readiness before him, head turned sideways as he listened into the high, thin whine of the wind and the deep and distant booming of the surf below, trying to isolate the sound that had aroused his suspicions. But now the first Shock was over and Mallory's mind was working again. To go up on to the top of the cliff would be suicidal: ten to one the guard would hear him scrambling over the edge and shoot him out of hand: and if he did get up he had neither the weapons nor, after that exhausting climb, the strength to tackle an armed, fresh man. He would have to go back down. But he would have to slide down slowly, an inch at a time. At night, Mallory knew, side vision is even more acute than direct, and the guard might catch a sudden movement out of the corner of his eye. And then he would only have to turn his head and that would be the end: even in that darkness, Mallory realised, there could be no mistaking the bulk of his silhouette against the sharp line of the edge of the cliff. Gradually, every movement as smooth and controlled as possible, every soft and soundless breath a silent prayer, Mallory slipped gradually back over the edge of the cliff. Stifi the guard advanced, making for a point about five yards to Mallory's left, but still he looked away, his ear turned into the wind. And then Mallory was down, only his finger-tips over the top, and Andrea's great bulk was beside him, his mouth to his ear. "What is fry's electronics digital cameras it?" Somebody there?" "A sentry," Mallory whispered back. His arms were beginning to ache from the strain. "He's heard something and he's looking for us." Suddenly he shrank away from Andrea, pressed himself as closely as possible to the face of the cliff, was vaguely aware of Andrea doing the same thing. A beam of light, hurtful and dazzling to eyes so long accustomed to the dark, had suddenly stabbed out at the angle over the edge of the cliff, was moving slowly along towards them. The German had his torch out, was methodically examining the rim of the cliff. From the angle of the beam, Mallory judged that he was walking alone about a couple of feet from the edge. On that wild and gusty night he was taking no chances on the crumbly, treacherous top-soil of the cliff: even more likely, he was taking no chances on a pair of sudden hands reaching out for his ankles and jerking him to a mangled death on the rocks and reefs four hundred feet below. Slowly, inexorably, the beam approached. Even at that slant, it was bound to catch them. With a sudden sick certainty Mallory realised that the German wasn't just suspicious: he knew there was someone there, and he wouldn't stop looking until he found them. And there was nothing they could do, just nothing at all. . . . Then Andrea's head was close to his again. "A stone," Andrea whispered. "Over there, behind him." Cautiously at first, then frantically, Mallory pawed the cliff-top with his right hand. Earth, only earth, grass roots and tiny pebblesthere was nothing even half the size of a marble. And then Andrea was thrusting something against him and his hand closed over the metallic smoothness of a spike: even in that moment of desperate urgency, with the slender, searching beam only feet away, Mallory was conscious of a sudden, brief anger with himselfbe had still a couple of spikes stuck in his belt and had forgotten all about them. His arm swung back, jerked convulsively forward, sent the spike spinning away into the darkness. One second passed, then another, he knew he had missed, the beam was only inches from Andrea's shoulders, and then the metallic clatter of the spike striking a boulder fell upon his ear like a benison. The beam wavered for a second, stabbed out aimlessly into the darkness and then whipped round, probing into the boulders to the left. And then the sentry was running