In Abby Geni’s mystery thriller, The Lightkeepers, creepy crawlies compete with head-bashing seagulls, whales, sharks, and a small group of research biologists in the isolated Farallon Islands off the coast of San Francisco.   Miranda, a nature photographer, tries to make peace with the death of her mother, but ghosts, mysterious accidents, and murder keep distracting her.  If you can survive the miserable descriptions of mice crawling everywhere, bats attacking,  and the image of bird poo (guano) covering every inch of ground, you will enjoy the extensive information about marine life that keeps intruding on the fast-paced mystery.  You’ll keep reading to be sure the murderer is who you think it is.