The Dark Shore — Susan Howatch

The anonymous voice from the past whispered into the receiver, "Welcome home, Mr. Towers. Does your fiancee know how you killed your first wife ten years ago?"

Soon after Sarah moved into her new home as the bride of charming, enigmatic Jon Towers, some instinct warned her to run for her life. Too many "accidents" were beginning to plague her.

Sarah knew only that her husband's first wife had plunged to her death from a nearby cliff, under mysterious and questionable circumstances. Now someone was trying to kill Sarah.