When the President of France secretly enlists Mycroft Holmes to manage the explosive fallout of Captain Alfred Dreyfus’s treason trial, Mycroft sees a chance to stabilize a nation on the brink. But Sherlock Holmes, summoned by Dreyfus’s desperate brother, uncovers evidence of a shocking frame-up. As the brothers clash over truth versus political expediency, a web of forgery, prejudice, and high-stakes espionage unravels. In this gripping retelling of history’s most infamous miscarriage of justice, the fate of a man, a country, and the Holmes brothers’ own legacy hangs in the balance.