'When the snow water had broken crevices open in the mountain a shot or even just a sharp cry was enough to tear loose a huge slab and send it toppling.' Lieutenant Thomas Glahn spends a summer in northern Norway, where the midnight sun triggers a short but intense release of energies. Living out of a rudimentary hut on the edge of the forest, he pursues a solitary existence, hunting, fishing, and engaging intermittently with...