The Edge by Catherine Coulter

FBI agent Ford MacDougal’s life takes a dark turn when his sister, Jilly, is gravely injured in a mysterious car crash that doesn’t feel accidental. When she awakens in a hospital, she can’t remember what happened—or why someone might have wanted her dead. Determined to uncover the truth, MacDougal travels to the coastal town of Edge, Washington, where Jilly had been living before the crash.

In Edge, secrets run deep and danger lurks beneath the surface. The townspeople are guarded, the scenery breathtaking yet treacherous, and everyone seems to be hiding something—including Jilly herself. As MacDougal delves into her past, he discovers that nothing in Edge is what it seems. Lies, betrayal, and obsession intertwine until both brother and sister find themselves standing on the razor’s edge between truth and death.