There are ten total volumes in this book, and yes you actually have to read all of them to fully appreciate the scope of the book. The basic plot is that an anlien culture, planning to invade Earth, eventually reconsiders, due to the less desireable aspects of our society.
This report prepared by Soltan Gris
A rather chaotic fun book.
An invasion of Earth is planned. The invasion is viewed from the eyes of an alien in a sort of brutal CIA type of organisation. This is the first book of a series so it's all set in preparation, as the agent tries to tempt a true (if generic) alien hero explorer into helping his plans.
Lots of fun humour ensues, as our rather evil protaginist attempts by hook or crook to deal with everything, from his evil boss down to planning the mission.
Includes some funny observations of what an alien race may think of our society etc.
At least worth a look (especially if your a fan of Harry Harrison's style)
This report prepared by Andrew Banks