Architect Walter Stackhouse (Patrick Wilson), crime novelist by night, is quite unhappily married to Clara (Jessica Biel), a successful real estate saleswoman. As Walter becomes fascinated by the case of Melchior Kimmel, a bookstore owner in New Jersey suspected of murdering his wife Helen, he begins to imagine what it might be like to murder his own wife. In this faithful adaptation of the 1960s suburban thriller, The Blunderer, written by Carol author Patricia Highsmith, the question of how we judge a person’s guilty conscience in the death of another plays a central theme.