This is a time travel/alternate world novel rom the author of DARWINIA and VORTEX. It's the late 1800's and time travelers from the present have established a small city in the middle of America. They've been there for almost a decade and soon it will be time to leave. In the meantime they've been procuring gold and sending it to the future-and sharing limited information to these people in the past. Another big business is giving tours to modern day sight-seers. But why aren't they concerned that they'll change the future? Because each time they open a portal to the past it establishes a new reality, a new Earth. Jesse Cullum is a native who has been working in security for years-and he saves the life of visiting President Ulysses S. Grant. The would-be assassin had used a modern gun, so he and his superior, who he's in love with, try to find out how these weapons are being smuggled back to the past. This is a very straightforward, fast, entertaining read. Recommended.