Earthbound is a novel written by Richard Matheson under the name Logan Swanson. It was first published in 1982.
Description[]
David and Ellen Cooper came to the lonely beachside cottage in hopes of rekindling their troubled marriage. Yet they are not alone on their second honeymoon. Marianna, a beautiful and enigmatic stranger, comes to visit David whenever Ellen is away.
Who is Marianna, and where has she come from?
Even as he succumbs to her seductive charms, David realizes that Marianna is far more than a threat to his marriage, for her secrets lie deep in the past and beyond the grave. And her unholy desires endanger the life and soul of everyone she touches.