Robots and Empire

Read Robots and Empire Storyline:

Two hundred years after his humiliating defeat at the hands of Earthman Elijah Baley, Keldon Amadiro still dreamed of revenge. Now, finally, he set into motion a plot that would totally destroy the planet Earth.
But Amadiro had not counted on the power Baley still exerted long after his death. For Baley's vision continued to guide his robot partner, R. Daneel Olivaw, and the extraordinarily gifted robot Giskard—and they were the only ones who could save Earth.
Fortunately for Amadiro, Daneel and Giskard were restrained by the Three Laws of Robotics. Or were they?