It's the height of summer and the wealthy Finney family have gathered at the Manoir Bellechasse to pay tribute to their late father. But as the temperature rises, old secrets and bitter rivalries begin to surface. When the heat wave boils over into a mighty storm, a dead body is left in its wake. Chief Inspector Gamache, a guest at the Bellechasse, finds himself with a building full of suspects. With the hotel locked down, the murderer is trapped. But a cornered predator is always the most dangerous of all.