Paul Craig is an aviator-inventor who becomes blind due to overwork. He stumbles into a room as a person is being killed by foreign agents - who decide to let Craig live because he cannot identify them. The murder is part of a plot to overthrow the monarchy of fictional Ruvania.

• Pyramid Pictures
• Walter Bentley
• John Bruce
• George Bryant
• Nellie Ferguson
• Harry Halley
• Eric Harrison
• Grace Savieri
• Cecil Scott