"Howard Silk is a lowly cog in the bureaucratic machinery of a Berlin-based United Nations spy agency. When Howard discovers that his organization safeguards the secret of a crossing into a parallel dimension, he is thrust into a shadow world of intrigue, danger, and double cross, where the only man he can trust is his near-identical counterpart from this parallel world."--Container.
A hapless UN employee discovers that the agency he works for is hiding a gateway to a parallel dimension that's in a cold war with our own, and where his other self is a top spy. The war slowly heats up thanks to spies from both sides.