El Paciente Interno by Arthur Conan Doyle

The book is a gripping tale of mystery and intrigue, centered around a perplexing medical case that challenges the protagonist's deductive skills. Set in a hospital, the story unfolds as a brilliant detective is called upon to unravel the enigmatic circumstances surrounding a patient's mysterious condition. As the investigation progresses, hidden motives and dark secrets are revealed, leading to a thrilling climax that showcases the detective's unparalleled ability to piece together seemingly unrelated clues. The narrative combines elements of suspense and intellectual challenge, keeping readers engaged until the very end.