Movies: Invisible animal

A scientist successfully creates an invisibility serum, only to be kidnapped by a gang of thugs who wish to use the formula to rob a priceless jewel....

Young doctor Garondet is summoned by renowned Professor Orloff. At Orloff's castle, Garondet discovers that the mad scientist has created an invisible yet murderous apeman....

A fugitive, dangerous madman reaches an English village where he confronts his former partner who left him for dead in the jungle after their discovery of a diamond mine. When the former partner also claims to have since lost the mine and all its wea...