Second mother - Jenny Milchman

"Proving Stephen King isn't the only author who can make a scenic small town in Maine feel menacing, Jenny Milchman's The Second Mother is a haunting thriller."-POPSUGAR
Opportunity: Teacher needed in one-room schoolhouse on remote island in Maine. Find the freedom in a fresh start.
Julie Weathers isn't sure if she's running away or starting over, but moving to a remote island off the coast of Maine feels right for someone with reasons to flee her old life. The sun-washed, sea-stormed speck of land seems welcoming, the lobster plentiful, and the community close and tightly knit. She finds friends in her nearest neighbor and Callum, a man who appears to be using the island for the same thing as she: escape.
But as Julie takes on the challenge of teaching the island's children, she comes to suspect that she may have traded one place shrouded in trouble for another, and she begins to wonder if the greatest danger on Mercy Island is its lost location far out to sea, or the people who live there.