Lupin has been spotted fleeing the scene of a robbery.

Two soldiers discover their comrades unconscious and a weapon missing.

The inventor of the jet engine mysteriously disappears.

The criminal Karst wants to recover a diamond from the wreck of the famous Titanic, but Lupine, whose father wanted to bring back the diamond to America 20 years ago, gets in Karst's way.

Karst pins a theft on Arsene Lupin.

Lupin's friend escapes from jail.