Spain, summer 1937. The civil war between Spanish nationalists and republicans rages. On the bloody sierras of Aragon, among Generalissimo Franco's volunteers is Martin Bora, the twenty-something German officer and detective whose future adventures will be told in Lumen, Liar Moon, The Road to Ithaca and others in the Bora series.

Presently a lieutenant in the Spanish Foreign Legion, Bora lives the tragedy around him as an intoxicating epic, between idealism and youthful recklessness.

The first doubts, however, rise in Bora' s mind when he happens on the body of Federico Garcia Lorca, a brilliant poet, progressive and homosexual. Who murdered him? Why? The official version does not convince Bora, who begins a perilous investigation. His inquiry paradoxically proceeds alongside that which is being carried out by an "enemy": Philip Walton, an American member of the International Brigades. Soon enough the German and the New Englander will join forces, and their cooperation will not only culminate in a thrilling chase after a murderer, but also in a very human, existential face-to-face between two adversaries forever changed by their crime-solving encounter...