Savich emptied the morphine from one of the syringes into the ground and drew back the plunger to fill the cylinder with air. Mikhail was the biggest man on the survey team, a heavyset Ukrainian who had once been a wrestling champion in Kiev. Savich thought nothing of it as he sank the fine needle into Mikhail’s throat where the carotid artery pulsed faintly. He slowly depressed the plunger, sending a lethal bubble of air into the wrestler’s bloodstream. So used to the flies, Mikhail hadn’t even felt the small sting. Savich waited just a few seconds before the bubble became an embolism inside the man’s brain and he stroked out silently. He repeated the procedure twice more. Only old Yuri Strakhov struggled at the end. His eyes flew open at the prick of the needle. Savich clamped his hand over his mouth and pressed his weight on the geologist’s chest, pumping the air into his artery with a savage thrust. Strakhov thrashed for just a brief moment before he went limp.

By the light of the gas lantern, Savich thought about his next move. He recalled that about five kilometers closer to the coast was a tall, steeply angled slope covered in talus and scree. The footing was treacherous, and a careless man could slide nearly a kilometer to its base. A tumble down the slope would do enough damage to a corpse to dissuade even the most iron-stomached forensic doctor in the unlikely event there would be an autopsy.

That first night Anton Savich went through his teammates’ notebooks and field journals. He tore out any page that made reference to the strike or any observation about terrain or geology from after they’d trekked past the gravel-strewn hillside. He excised everything that could be questioned during the investigation and made certain none of the journals mentioned anything interesting in their current search grid. He doctored his own journal to make it appear they had covered more ground than they had so no one would have reason to return here. At dawn he began to carry the sleeping bags containing the bodies to the top of the slope. The Ukrainian, Mikhail, was too heavy to shoulder, so he fashioned a litter out of branches and straps from a backpack and dragged the corpse. He was exhausted and drenched in sweat and cursed himself for not waiting until the next day to move the last body. Rather than return to camp in the darkness, he spent a miserable night huddled next to his victims.