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.
Paul Kelly
Cliff Herlihy
DeForest Kelley
Vince Grayson
Ann Doran
Lil Herlihy
Kay Scott
Betty Winters
Charles Victor
Captain Warner
Robert Emmett Keane
Lewis Belknap, aka Harry Byrd
Jeff York
Deputy Torrence (as Jeff Yorke)
Gladys Blake
Bank Clerk (uncredited)
