Well done on your response to the odious Inspector Barley's cross examination, Eoghan. That was admirable (even if predictably ultimately futile), and it makes me hope that you and your immediate family will come out of these strange events OK and with possibly even a hope for a better future.
I'm not buying into any of the suspects that are being shoved under my nose, however much it may seem that logically they are the only persons that can have committed the crimes (and however much superficially they might have had a motive). There's an agent manipulating things in the background, I'm fairly certain -- Wynne places way too great an emphasis on psychology and on Mary Gregor's stranglehold of the entire Duchlan clan, from her youth onwards. The solution has to be connected to that.