Christopher L. Bennett 
Higher Frontier [EPUB ebook] 

An all-new Star Trek movie-era adventure featuring James T. Kirk! Investigating the massacre of a telepathic minority, Captain James T. Kirk and the crew of the U.S.S. Enterprise confront a terrifying new threat: faceless, armored hunters whose extradimensional technology makes them seemingly unstoppable. Kirk must team with the powerful telepath Miranda Jones and the enigmatic Medusans to take on these merciless killers in an epic battle that will reveal the true faces of both enemy and ally!