From the PDF:
Drawn out of the BosWash metroplex deep into the Out-Law and uncomfortably close to Demonground, the players team up with a rough-and-tumble group of salvage experts who may know more about the spreading Darkness than they let on. Far from the teaming streets of BosWash, somewhere off the Northeast Turnpike Extension, a baited trap lays waiting, The players will be pulled from the crowded metroplex streets to the low, forbidding mountains of the East Coast and the horrible Dark "thing" that has slipped the ever-weakening barriers that has kept it at bay for millennia.
Modern conspiracy horror in a dismal alternate future, but with hope of making a difference..."Mount up, Minion Hunters!"
DETOUR is designed for use with Dark Conspiracy® 1st and 2nd Editions (available here) and will be updated to the new 3rd edition (DARK CONSPIRACY III) when it is released.