In Julio Cortazar's thrilling short story, 'The Night Face Up,' reality and dreams intertwine in a chilling tale of an injured motorcyclist. Found in two worlds, one in a hospital bed recovering from an accident, and the other running for his life in an ancient Aztec ritual, the protagonist grapples with the duality of his existence. This captivating narrative keeps you guessing which world is real and which is a product of fevered dreams. Is he a modern man dreaming of a terrifying past, or an Aztec man imagining a futuristic world? The ending, a chilling twist, leaves readers questioning their understanding of reality. Cortazar's writing style, with its vivid imagery and attention to detail, transports you into the worlds he describes, making you feel the fear and confusion of the protagonist. The story also provides a peek into the gruesome Aztec practice of human sacrifice, contrasting it with the sterile environment of a hospital. 'The Night Face Up' is a masterful exploration of perception, reality, and time, showcasing Cortazar's remarkable storytelling prowess.