I agree with xenoi that this was loosely written, or rewritten since it's a rewrite of the earlier Day of the Star Cities. However, there were two things that kept me reading once I started. First was the myriad reactions of the characters to the aliens, which I thought were realistic and interesting. The second was watching how they figured out what the aliens were doing. -- Billie ( )

Governments have lost control and large portions of the planet have become dangerous after settlements are established by mysterious aliens. Not without interest, but loosely & hastily written. ( )