Carl and Elsa Spann have moved into a trailer park in California, after Elsa suffered a nervous breakdown. She is adjusting well to a more peaceful lifestyle, after her rigorous training as a ballerina. But then Carl comes home from work to find Elsa shocked and traumatized after a man assaulted her in the trailer. The police investigate, but find little to go on. Carl becomes increasingly angry about what has happened, and he is determined to kill the man responsible, if he can find him.

Mr. Pelham consults a doctor about a series of troubling incidents. Recently a number of his acquaintances have claimed to have seen him in places where he could not have been. The doctor suggests that there must be another man with a strong resemblance to Pelham. But it soon becomes obvious that the other man is also deliberately impersonating him - even to the point of using Pelham's apartment as his own.

Mary Maloney is a devoted wife and an exceptional housekeeper. One day, her husband, the police chief, announces that he wants a divorce because he has met another woman. Mary is quite angry and kills him with a blow from a frozen leg of lamb. She calls the police and provides and alibi for herself with the story that she'd been out to the store when the murder took place. The investigating officer, Lieutenant Noonan, is further frustrated when he cannot to find the murder weapon. Knowing of the long and hard hours spent looking into the case, Mary invites Noonan and the other investigators for a bite to eat. They dig into Mary's leg of lamb and Noonan still thinking about the missing murder weapon says "For all we know, it might be right under our very noses."

世界电影大师阿尔弗雷德·希区柯克自导的悬念故事集，每个小故事都或多或少包含了恐怖，悬疑，超自然等元素，每集开始都是由导演本人拉开序幕，等到故事完毕，又由导演本人闭幕总结。记得小时候曾经在电视里看过，每个故事都很精彩，看完之后令人拍案叫绝。

由悬疑大师希区柯克主持的系列电视《希区柯克剧场》的延续，以惊悚片和悬疑片为特色。

The kooky Babs Fenton's imagination is a great asset when writing murder mysteries. But it does not foster peace and harmony in the home, especially not when she has an unimaginative corporate lawyer for a husband. Her overstimulated mind begins working on her new next-door neighbors, the Blanchards, when she realizes she's never seen Mrs. Blanchard. And Mr. Blanchard seems less than eager for her to pay a call. Has Mr. Blanchard, a high school teacher and former university professor, murdered his wife?

Only one reel of this two-reel film is known to survive.
Arguably the first film directed by Alfred Hitchcock (along with Number 13) after several years as a title designer.
Alfred Hitchcock was originally hired as assistant director, but when the producer got into an argument with the director and fired him, he promoted Hitchcock to full director.