Based on the Short Story: "The Face in the Fog" by Jack Boyle (May 1920 Cosmopolitan)

SYNOPSIS:

Boston Blackie, the dapper reformed jewel thief, gets tangled up in the affairs of a Grand Duchess Tatiana and her friends who have escaped from Soviet Russia with some of the Romanoff jewels and brought them to the United States for safety. The United States government is aware of the jewels and wants to get their hands on them. Worse yet is the renegade terrorist group led by Count Ivan and the revolutionist Petrus that also whats to get their hands on the jewels. A blind beggar gives Blackie the jewels and Blackie knows that he is being followed by the gang of terrorists, so until he can get them to their rightful owner, he places the jewels in a safe that's wired with electricity. Petrus and his associates trace the booty to Blackie's home and a vicious fight breaks out. But, when Petrus tries to open the safe, he is electrocuted. The terrorists are rounded up and Count Ivan is exposed as their leader. Blackie gives paste copies of the jewels to the U. S. Government, and returns the originals to Grand Duchess Tatiana and Count Orloff.