Re: Barking. Yeah, another good point.
Also, the dead woman didn't exactly interact with the killer much before she was held underwater, so how did she inhale the dog hair?
They did trick me with the killer's identity
the brother wanted to get his sister off the corporate board. I think it was Korsak who commented, "The woman married the wrong sibling" after her fellow killer explained the wife's motive
for wanting the husband killed was to save her "girlfriend's" job. I assumed that meant the victim didn't like feeling his sister had turned him into a cuckold and was trying to get rid of his sister from the family held company for that reason.