It is 1870. When amateur archaeologist Adam Carver and his loyal but obdurate retainer Quint are visited in their lodgings in London's Doughty Street by an attractive young woman, their landlady is not pleased. The visitor's arrival pitches Carver and Quint headlong into an elaborate mystery which comes to centre on the existence (or not) of a lost text in Ancient Greek, one that may reveal the whereabouts of the treasure hoard of Philip II of Macedonia.

Two deaths soon ensue as master and manservant follow what clues they can grasp in the roughest and most genteel parts of the teeming metropolis, with the whiff of cordite and blackmail never far from their nostrils. The scene shifts to Athens and the wilder fastness of a Greece gripped by political unrest as Carver and Quint join forces with Adam's former Cambridge tutor in an attempt to track down the elusive text. But nothing is quite what it seems, and no one involved is prepared for the final, shocking denouement amidst the extraordinary hilltop monasteries of Meteora...