Watchers of the Dark: 00 (Jan Darken Trilogy)

Sinister invisible forces of a secret mental weapon known only as The Dark are threatening the entire Primores galaxy several transmitting leaps away from Earth. By the time a bizarre Mr. Smith comes to detective Jan Darzeks New York office whole planets have been lain waste.Darzak is offered a million dollars by Smith to accept a job that will almost certainly be fatal: identify the incredible power that is about to overwhelm the few remaining planets in the beleagered galaxy so that these worlds might somehow halt the rampage. A superb science fiction novel by a master of the genre.