Stellar Revolution — Stephen Goldin

A hidden conspiracy is plotting to use the tsaritsa's wedding as the occasion to overthrow the true ruler and start a bloody revolt to take over the throne for themselves. Meanwhile, in the depths of interstellar space, a flotilla of space pirates is gathering. Is it mere coincidence, or a coordinated attack to topple the Empire and seize control of all human-occupied space? The Imperial Special Investigation Service must unravel the plots and thwart these plans before it's too late.