Amid the concrete jungles of New York, an ancient curse seeping from the pages of an old alchemy book envelops the apartment buildings. Dario Argento draws the viewer into an eerie corridor stretching between Rome and Manhattan. Drawing on the darkest veins of the horror and suspense genres, the film depicts the ever-narrowing circle of a young man tracking the trail of death as he searches for his missing sister. This atmosphere, dominated by witch lore and eerie shadows, blurs the line between dream and nightmare. That apartment building, harboring a different secret around every corner, never lets those who enter go free.