Boston Blackie Dawson gets some jewels that belonged to the imperial family of Russia. A gang of terrorists is after the jewels.
Lionel Barrymore
as Boston Blackie Dawson
Seena Owen
as Grand Duchess Tatiana
Lowell Sherman
as Count Alexis Orloff
George Nash
as Huck Kant
Louis Wolheim
as Petrus
Mary MacLaren
as Mary Dawson