Manhattan, USA, 1899: Electrical engineer Nikola Tesla detects strange signals coming from an object orbiting the Earth at a high velocity, fifty years before mankind’s first satellite is launched into space. The signal is again detected by radio operators in Norway twenty years later and is confirmed by the United States Air Force. Then, silence…, until now.Ethan Warner and Hannah Ford of the Defense Intelligence Agency are called in to investigate a sudden resurgence of the signal, and unveil a tremendously classified operation by NASA and the USAF to conceal the evidence from the rest of the world. Tracking the decaying orbit of the object, code-named *Black Knight*, they discover that it is about to descend to Earth for the first time in 13,000 years — and that it is homing in on an Earth-bound signal coming from deep inside the Arctic Circle.Ethan and Hannah are dispatched with a crack team of soldiers and scientists to intercept the object, and in doing so locate the bleak remains of a wartime German submarine base buried deep in the ice floes connecting the Nazis and the orbiting Black Knight. But they are not alone in their search as the combined forces of their arch enemies, Majestic-Twelve, amass to fight for the right to the satellite. But in the bleak wastes of the Arctic there is something else awaiting all of them that is not of this world…