Salem Falls by Jodi Picoult

A handsome stranger comes to the sleepy New England town of Salem Falls in hopes of burying his past: Once a teacher at a girls’ prep school, Jack St. Bride was destroyed when a student’s crush sparked a powder keg of accusation. Now, washing dishes for Addie Peabody at the Do-Or-Diner, he slips quietly into his new routine, and Addie finds this unassuming man fitting easily inside her heart. But amid the rustic calm of Salem Falls, a quartet of teenage girls harbor dark secrets—and they maliciously target Jack with a shattering allegation. Now, at the center of a modern-day witch hunt, Jack is forced once again to proclaim his innocence: to a town searching for answers, to a justice system where truth becomes a slippery concept written in shades of gray, and to the woman who has come to love him.