The olive harvest is drawing to a close in the town of Dendra, and when Hermes Diaktoros arrives for the celebratory festival he expects an indulgent day of food and wine. But as young men leap a blazing bonfire in feats of daring, one of them is badly burned. Did he fall, or was he pushed?

Then, as Hermes learns of a deep-running feud between two families, one of their patriarchs dies. Determined to find out why, Hermes follows a bitter trail through the olive groves to reveal a motive for murder, and uncovers a dark deed brought to light by the sin of gluttony.