Fear, anguish, and dread are some of the main ingredients to make any reader fall in love with horror, leaving their complexion pale and their hair standing on end. No wonder! Who doesn't like a plot that's, like, loaded with suspense and mystery, and keeps you hooked until the very last page?! That's exactly what the short story "Nightmare" is about. A cold-blooded, cowardly killer prowls through the outskirts of the city, hunting for new victims to exercise his cruelty on. Meanwhile, it's late at night, and Marcos, at the request of his wife Joana, drives her to his father-in-law's so she can give him a cell phone as a gift. When they arrive, the neighborhood dogs are barking incessantly, and, even though they repeatedly ring the doorbell and then knock at the gate, there's no sign of the old man. Was he...?