A young couple is brutally murdered in a parking lot. Superintendent Lanecquer is put in charge of the investigation, but he keeps having visions that only get more intense as a lethal disease gnaws away at him. In one vision, he identifies a flocked van and a strange Trajectory. A florist who deals drugs, an elderly birdwatching couple passing through the region tracking migrations, a band of delinquent teens, a soccer-coaching cop: who is behind the string of murders in the mist?