Society sleuths Nick and Nora Charles investigate a murder aboard a floating casino. Nick and Nora Charles are attending a charity benefit aboard a gambling ship. After a murder occurs, suspicion falls on Phil Brant, who had argued with the victim earlier in the evening. When Phil and his wife seek help from Nick and Nora, Nick refuses to get involved. But when shots are fired outside his own apartment, Nick begins to investigate, and he soon finds himself in a confusing case with numerous suspects. Nick and Nora Charles were the ultimate screen couple, husband and wife detectives, always in step and never missing an opportunity to outwit one another as they solved each crime, which they did just in time for the movie's ending. Myrna Loy was a fantastic Nora, the ideal wife and considering she made 14 movies with William Powell, she made it look like they were really married. The Thin Man movies, all six of them, played more like sophisticated screwball comedies than murder mysteries, and their comic banter enhanced the proceedings. Their little wire-haired terrier, Asta, quite often stole the scene as he helped sleuth out the guilty party. He was a great little actor and rumor had it that away from the Thin Man movies, Asta was really Skippy. However, the six Thin Man movies credit this cute pooch as Asta.
剧情就是一部片子的主线，就是这部影片的灵魂，如果一部片子没有一个好的主线，无疑这必定会是一部烂片。因为我们无法真正的去捕捉这部剧或是这部电影要传达给观众是什么，或是他想通过这部片子反映一个什么道理。
瘦人之歌导演以自身的传统美学功底，对电影的写实艺术特性也有精深的理解和把握，他特别擅以生动的细节描绘人物的内心活动，并调动电影的各种艺术元素为塑造人物服务。
作为一门艺术，不仅要有优秀的故事和表演，还需要具备出色的技术表现。摄影、音效、音乐和特效等方面的表现都能够提升电影的观赏价值。技术的精湛与细腻能够帮助电影更好地传达情感和故事，增强观众的观影体验。
