Opposing resourceful, ruthless and well-funded terrorists ready to bring unimaginable devastation to American shores are a husband-and-wife team: Hugh Rincon, a Langley-based CIA honcho, and Sara Lange, the executive officer aboard the U.S. Coast Guard cutter Sojourner Truth, which patrols the Maritime Boundary Line in the northern Pacific Ocean. Globe-hopping action moves from Thailand to Hong Kong, Korea and Russia, culminating in a naval showdown off the Alaskan coast.