An American lover of architecture is escorted to a crumbling Mexican castle by the local padre. He warns the visitor to keep his room door locked and avoid the family that lives there--especially the maniacal mother when the black wind blows. Eventually, the curious American learns the horrible truth about the family's history of blood lust.

Directed by Robert Stevens
Starring Rex Marshall, Robert Emhardt, John Baragrey

Cast
Rex Marshall as Self - Announcer
Robert Emhardt as Arnold Sachs
John Baragrey as Charles Kincaid
Mildred Natwick as Nadia Demarest
Robert H. Harris as Captain Randall
Mary Sinclair as Connie Williams
Anthony Ross as Albert
Royal Dano as Barney the Bookie
Lawrence Fletcher as Captain Merriman
Eileen Heckart as Margaret Quartermain