Ghostly Awakening, by Lacey Savage, free on Kindle courtesy of Ellora's Cave.
Book Description
Eighteen years of solitude have annihilated Sebastian Bradley's social skills. Not that he needs them. He's resigned himself to a life of complete seclusion until trouble decides to pitch a tent on his lawn and entice him with wide, curious blue eyes.
Now there are people under Sebastian's roof, invading his privacy, using his home as a locale for a fancy society Halloween bash. One woman's to blame. A woman who in one short week has managed to turn Sebastian's entire world on its axis and awaken hungry, desperate desires that even a ghost can't ignore.