A widow (Michele Morgan) in a small town begins to realize that her late husband was hated by nearly everybody. She begins to receive blackmail letters that threaten to further humiliate her if she does not pay up. She enlists the help of Franz (Robert Hossein), a man who was once fired by her late husband, to track down the source of the letters. She becomes unhinged and eventually tries to kill the man who is helping her in this early example of a Giallo.

放放电影网友评论：看 黑眼圈[电影解说] 的时候我最在意的不是场面，而是观感。它不是靠噱头硬撑，里面还是有东西的，有些转场还挺顺的。至少看完没觉得浪费时间。