Adler was released in the year 1925。Adler is also called as The Eagle, Kotka, Aquila, Aquila nera, Aigle noir, A Águia, Águila negra。

Vladimir Dubrouvsky, a lieutenant in the Russian army, catches the eye of Czarina Catherine II. He spurns her advances and flees, and she puts out a warrant for his arrest, dead or alive. Vladimir learns that his father's lands have been taken by the evil Kyrilla Troekouroff, and his father dies. He dons a black mask, and becomes the outlaw The Black Eagle. He enters the Troekouroff household disguised as a French instructor for Kyrilla's daughter Mascha. He is after vengeance, but instead falls in love with Mascha.

Adler actors and actresses include Rudolph Valentino, Vilma Bánky。