Before a planned African expedition, Jim's fiancée Eve worries her father's guest plans to steal one of her father's rubies. The couple are kidnapped and held prisoner at a mysterious, creepy house, where strange things are afoot.

Thelma Todd
as Eve Martin

Creighton Hale
as Jim Kirkham

Sheldon Lewis
as 'The Spider'

William V. Mong
as The Professor

Sôjin Kamiyama
as Sôjin

Laska Winter
as Satan's Mistress

Angelo Rossitto
as The Dwarf

Ivan Christy
as Jim's Valet

DeWitt Jennings
as Uncle Joe

Nora Cecil
as Old Witch