Imperial Stars
E. E. Smith
 The year is 2447 and the Empire of Earth comprises more than a thousand inhabited systems. A threat to the Empire has developed and the Imperial secret service "SOTE" has been unable to foil it. In desperation they turn to the Family D'Alembert for assistance. The Family D'Alembert are natives of the high gravity planet DesPlaines, giving them unusual strength and speed. Travelling the galaxy under the cover of their famous circus, they are the Emperor's super secret force.