Mission Earth:: The Invaders Plan by L. Ron Hubbard

Paperback. Condition: Good. 1985. Bridge Publications.  1st Edition.

An advanced species of aliens discovers Earth and fears that its developing technology can someday endanger their empire. Thus begins Mission Earth a spectacular series following the aliens' intricate infiltration of Earth society to bring about its downfall. The Invaders Plan begins the paperback publication of this blockbuster series.