Inside the Shadow — G. William Parker

The deaths of Harriett Miller and her Russian cohorts close Rick Morgan's latest investigation. Needing solitude and comfort Rick heads for the only place he finds it, in a pair of seductive green eyes in San Francisco. But then a strange turn of event creates a question, pulling him back to Seattle for the answer.
Playing a hunch with the help of Vince, a retired Seattle PD homicide detective, Rick begins to revisit the past. Digging into the old puzzles he finds some new pieces and when fitted together uncovers a startling surprise. Someone is rewriting history ... but why?
A photo will bring Rick face to face with the answer. With that solution every detail and clue, every murder and interview will suddenly make sense. And with that implication comes two revelations. First, it wasn't always "not everything's what it appears to be" but also "not everyone." And second, reality is often harsh and costly, especially when the price is someone close to you.