Wikipedia page about this book: https://pt.wikipedia.org/wiki/A_Confiss%C3%A3o_de_L%C3%BAcio

Release date is 2022-08-21

Laura Natal Rodrigues (Images generously made available by The Internet Archive.)

"A confissão de Lucio, Narrativa" by Mário de Sá-Carneiro is a short story that explores obsessions with suicide, love, and madness. Framed as a detective novel, the narrative follows Lúcio's account from prison, where he serves ten years for allegedly murdering his friend Ricardo. He promises to reveal the truth about this mysterious death, even when it seems unbelievable. At the story's heart lies a complex triangular relationship between Lúcio, Ricardo, and the enigmatic Marta, whose connections blur the boundaries between identity and desire. (This is an automatically generated summary.)

Originally published: Portugal: Em casa de autor, 1914