The Twilight Horizon is a campaign book involving shadowrunners in the inner workings of Horizon and the troubles surrounding the corporation. Everything is leading to a crisis, and the runners will need to use all their skills to come out alive on the other side. Filled with plot details, location information (including details about Las Vegas in the Sixth World), and NPC write-ups, the book throws Shadowrunplayers into a cyclone of corporations, spirits, criminals, and others looking to grab a small piece of Horizon's immense power.