Coimbra, 1692. A medical student named Francisco Luiz d'Abreu sits alone on a cold January night, poring over his books, when his friend Antonio de Sá returns from a year of flight and hiding. The reunion is not joyful. Antonio carries with him the weight of forbidden love, persecution, and the constant terror of being a "New Christian" in a Portugal where the Inquisition watches every converso's breath. What unfolds is a tale of loyalty pushed to its breaking point, sacrifice made in the shadows, and the impossible choices faced by those whose faith or blood makes them suspect in their own land. Camilo Castelo Branco, writing in the twilight of his own tormented life, crafts a devastating portrait of 17th-century Portugal, where love is contraband and survival requires wearing masks within masks. The glass eye of the title glints with dark irony: Camilo himself would lose his sight to disease and take his own life in 1890, making this novel about seeing what one must not see and speaking what one must not say.
