Peryferal by William Gibson

Set in a near-future America, the narrative follows Flynne Fisher, a young woman living in a small town, who becomes embroiled in a complex web of intrigue and danger after witnessing a murder while beta-testing a mysterious virtual reality game. As she navigates the blurred lines between her reality and the digital world, Flynne uncovers a conspiracy that spans across time and space, involving powerful entities from a post-apocalyptic future. The story explores themes of technology, identity, and the consequences of human actions on the fabric of reality.