本片是一部美国剧情片，由保罗·亨雷德导演，由阿尔弗雷德·希区柯克主演。
剧情简介：A woman who once accused Henry Dow of a crime enters the town and he invites her to stay with him and his sister. She tells Henry that she is carrying a large amount of money since she is planning an investment. Henry kills her for the money and dumps her body into the river. Henry then attends a dedication ceremony held on a bridge overlooking the river. When a body floats by, Henry is asked to identify it as the missing Miss Wilkinson. Without really looking at the body, he says it isn't her. A police detective asks Henry's sister to identify the body. Before she can have a look Henry confesses to the murder. Unfortunately for him, the body wasn't Miss Wilkinson's at all. It was someone else
外文名：The Impromptu Murder
别名："Alfred Hitchcock Presents" The Impromptu Murder / 即兴谋杀
类型：剧情 / 悬疑
地区：美国
导演：保罗·亨雷德
编剧：弗朗西斯·M·科克雷尔 / Roy Vickers
演员：阿尔弗雷德·希区柯克
