1942 film by Carmine Gallone

1940 film by Dino Falconi

Caterina finds out that her husband Peter Tzar of Russia, is plotting to kill her. She sets Count Orlov free from prison, Peter's sworn enemy, becomes empress of Russia and leads the Cossacks army against him.

1970 film by Luigi Filippo D'Amico

A famous surgeon earns enormous amounts of money by speculating on patients, although he is generally considered a great man and an excellent doctor. Only one of his colleagues rebels against the situation and tries to reveal the truth. But during a dramatic operation, the famous surgeon forces him to turn accomplice and the doctor must keep quiet. Not for long, however.