This question contains spoilers…
(view spoiler)[I am about 3/4ths into this book and almost quit it several times because of the ridiculous storyline that seems to be shamelessly stolen from the 50 Shades series. WTF is Tess thinking?!? It is one of the most unbelievable storylines I've ever read. It belongs in a Harlequin genre. I am only slogging through it because I keep thinking that it MUST get better. This is horrible so far! (hide spoiler)]
You have to suspend your disbelief and be willing to enter into the world Gerritsen is creating. If you can’t do that, you won’t enjoy the book. Bear in mind that whether the ghost is real or not is left up to the reader - you decide.