The Master Mystery (1918)

Quentin Locke, a Justice Department agent, is sent to infiltrate a fraudulent patents company. In an attempt to gather evidence on the phony patents, he takes a job as the manager's secretary who takes up residence in the mansion of business partner Peter Brent. Brent wants our of the nefarious scheme and has been rendered mentally incapable of cooperating with Locke through exposure to "Madagascar Madness", a chemical substance that was added to the wax of candles in his room. Locke accepts the challenge of protecting his daughter Eva as the gang pushes forward with their unethical agenda. The vicious gang of thugs use an ambulatory mechanical man to assist them in intimidating the household into supporting their plans. It suddenly appears out an unknown hiding place to wreak havoc on the household. Locke's pursuit of the gang eventually takes him to a mysterious, Oriental temple that features a statue of a deity with burning eyes.