The conflict between the Secret Service and a powerful combination of crooks who would wreck society. Every known device is employed in the pursuit of crime and of crime detection: Underground tunnels and secret vaults under the bay, chests of jewels and disappearing walls, submarine dips and airplane fights - these are just a few of the thousand thrills that sprinkle the action of... The Invisible Hand!

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.