Assassin's Orbit by John Appel

Murder makes unlikely allies. On the eve of the planet Ileri's historic vote to join the Commonwealth, the assassination of a government minister threatens to shatter everything. Private investigator Noo Okereke and spy Meiko Ogawa join forces with police chief Toiwa to investigate and discover clues that point disturbingly toward a threat humanity thought they had escaped.
Binding: Paperback / softback