Gods and androids

de Andre Norton

Awakening from a frozen mind state, an imprisoned Andas Kastor must discover if he is the rightful human Emperor of Inyange or an android double, in Android at arms, while in Wraiths of time, hurtled through space and time to the ancient Nubian kingdom of Meroe, a museum expert in African archeology finds she must play a key role in preserving their civilization from evil power-seekers.