Quote Originally Posted by Marigold2 View Post
Such evil. I find it a bit hard to believe the wife knew nothing, perhaps she lived in a bubble of happy make believe. They say a women knows when a man is cheating, how about killing. He must have left a million small signs that she now looks back on and says to herself
AH HA how did I not see that?
This is exactly what I thought when I read the OP, and still cannot fathom the total lack of clues.