The locale and set-up are indeed Quincy originals in this thriller and the fact that there is the distant possibility that the writers might off everyone in the cast before an hour is over is enough to keep a Quincy fan glued to the scree.
One problem I have is the lack of emotion the characters have in the murder of their friends. I mean Quincy knows these guys well and their deaths result in little in the way of emotion from Quince or any of the others. Of course Quincy has a crime to solve and he can't be distracted by the feelings that would affect the rest of us. However the normally overly-emotive Emily Hanover should be wringing her hands over these murders to at least the same degree she did when Quincy missed their wedding rehearsal in the previous episode.
Having had a honeymoon of mine own, I certainly would not have been as amenable as Quincy was to all of my old cronies showing up to ruin one of the most memorable weeks a couple has. The fact he clearly does not get any - even getting kicked out of the bridal suite at one point - could only have raised his already borderline hypertension to dangerous levels.