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.
as Cliff Herlihy
as Vince Grayson
as Lil Herlihy
as Betty Winters
as Captain Warner
as Lewis Belknap, aka Harry Byrd
as Deputy Torrence (as Jeff Yorke)
as Bank Clerk (uncredited)
as Rental Home Owner (uncredited)
as Clyde Bilyou (uncredited)
as Mr. Kern (uncredited)
as Mrs. Dorothy Belknap (uncredited)
as Man with Packages in Elevator (uncredited)
