Alien invasion stories have been done to death since H.G. Wells gave us The War Of The Worlds so it is extraordinarily difficult to come with a new slant to this time-honored genre. Well, William C. Dietz pulls it off with Death Day and the concluding volume Earth Rise. What sets Death Day apart from most of the invasion tradition is, first of all, the invading force being made up of different races. This makes an interesting dynamic and gives the enemy character as their squabbles, in-fighting and fight for freedom (some are slaves to others) make for something new, different and engaging. Also, using racism amonst the aliens as well as the surviving human population rings a true, and tragic, note. The surviving pockets of humanity withdraw within themselves, close off their borders and horde resources. The aliens favor people of color and place them as overseers as human slaves are forced to work building alien temples on Earth. And, sadly, collaborators work with the invading force to control the humans. But the seeds of rebellion have been planted. Humans and enslaved aliens are fighting back and this first book sets up an alliance between the enslaved races. All this is interesting stuff and makes for a fresh approach. Overall, I enjoyed this book and recommend it highly. Dietz is a great SF writer when it comes to letting character drive the story no matter the setting.