The Kind Worth Killing by Peter Swanson

Excellent thriller!  This novel is non-stop from the first page.  Strangers at a bar start talking and next thing you know the man is confiding that his wife is having an affair and the woman throws out "why don't you just kill her?"  From then on, the novel is a fast paced thriller as the man put the plan in motion, but, his wife has the same idea.

A thrilling Goodread....I recommend!