The dream is unusually vivid: Bank employee Vince Grayson finds himself murdering a man in a sinister octagonal-shaped room lined with mirrors while a mysterious woman breaks into a safe. It is so vivid that Vince suspects it may have really happened. To get the dream off his mind, he goes on a picnic with some relatives. When a thunderstorm forces his party into a nearby mansion, Vince discovers that the bizarre room does exist, and it means nothing but trouble.

• Pine-Thomas Productions
• Paramount Pictures
• Paul Kelly
• DeForest Kelley
• Ann Doran
• Kay Scott
• Charles Victor
• Robert Emmett Keane
• Jeff York
• Gladys Blake