Someone Else's Life: A Thriller - Lyn Liao Butler - Bog

"Annie should be at ease, safe in her new Kauai home with her husband and son. She hopes proximity to her family can provide them all with a sense of belonging and calm. But soon items from her past start turning up--her dog's collar, a bracelet that disappeared years ago, and she has the unnerving sensation she's being watched. Reality begins to fracture, and Annie's panic attacks return. When, during a brewing storm, a woman appears on her doorstep looking for shelter, Annie is relieved to have the company and feels an unexplainable bond with her visitor"--