Those Who Walk Away

When Ray Garrett's new wife kills herself on their honeymoon, he persuades the initially suspicious Rome police that he's innocent of any wrongdoing over the death. However, his father-in-law, the brutish Ed Coleman, is convinced Ray led to her death and shoots Ray, leaving him for dead. He survives and, desperate to prove himself, follows Coleman to Venice, the husband and father bound together by love and guilt, with Coleman still seeking justice and Garrett a clear conscience.

It has been called Highsmith's "masterpiece".^[1]