Offspring, by Steven Harper, the fourth and final book of his Silent Empire series, is now available on Kindle and is bargain priced at $1.79. The first three books in the series are Dreamer, Nightmare, and Trickster, all of which I've bought (and I've already grabbed this one).
Book Description
The lush and beautiful forest planet of Bellerophon is home to a cacophony of noises, but its resident psychics are known as the Silent. Previously they could travel to the Dream, a telepathic plane of existence where they could twist the laws of reality. But that time is over...
One madman's lust for power tore the Dream asunder. Now only a handful of the Silent can enter it. Kendi Weaver is one of them.
As an election for the governorship of Bellerophon begins, Kendi is caught in the crossfire. Attempts on his life—and a rash of Silent kidnappings—point to a political enemy...or a personal one. Either way, the future of the Dream is at stake. And Kendi fears it may become a nightmare.
Edited to add: The above order is by publishing date. However, if you'd like to read them in chronological sequence, it's Nightmare, Dreamer, Trickster then Offspring although the author says both of the first two can be read in either order and all of them stand alone (the last two are more intertwined, though). I've chosen to read them in this order and it works well.