A murder in a winter sports hotel jolts Inspector Eyck out of his cozy, relaxed holiday mood. He rushes to the scene, where he encounters crime writer Gorgas, who, as he says, conducts "crime scene studies." But this case isn't fiction, because a dead man lies on the ground. Eyck immediately begins his investigation, which initially yields little insight. And the prime suspect, Gorgas, also has a watertight alibi.