Defy the Stars (Flynn, #4)

After months apart, everyone thinks that River is successfully building a future without Flynn. Indeed, she has almost convinced herself that she is moving on. And then, one day, Flynn is back, bringing with him tales of his glamorous new life. River suspects his lucrative new work involves some form of criminal activity, but will she let herself be drawn back into Flynn's world? Or is this, finally, the end of the line for them both?