I am still finding it hard to reconcile "no obvious cleanup" with Mrs Dickie's observation that seemed to suggest there had been a cleanup. I think she used the word clinical in her description of the home when she arrived there.
I know exactly what you mean.
I can understand what she would mean - we all know with friends and family and our own homes, what they normally look like vs. a clean up to impress. That's what I think she means by clinical or sterile.
But if he had cleaned up enough for her to notice - for what reason unless to hide evidence of foul play? And how could he be good enough to hide that from the police in the house but in the car not even try ??
I can understand some people thinking there is more than one person involved here. Just from the contradictions.