“LAST TIME I went bouldering in my hobnails, I fell off,” said Conrad.

Jochen wanted to cheer, but knew that if he responded to the coded message it might alert a rival group tuned in to their frequency-or even worse, allow an eavesdropping journalist to realize that they’d discovered a body. He left the radio on, hoping for a clue that would reveal which of the two victims the search party had come across, but not another word was spoken. Only a crackling sound confirmed that someone was out there, but unwilling to speak.

Jochen followed his instructions to the letter, and after sixty seconds of silence he switched off the radio. He only wished he’d been selected as a member of the original climbing party, who were out there searching for the two bodies, but he’d drawn the short straw. Someone had to remain at base camp and man the radio. He stared out of the tent at the falling snow, and tried to imagine what was going on higher up the mountain.