That was Jacques Feyder's only English movie.He had just done his major works " Le Grand Jeu" "Pension mimosas" and "La Kermesse Heroique" and "Knight without armour" in spite of obvious qualities cannot compare with them.
This is a tormented love story between a commissar (Donat) and a Russian countess of the old Russian aristocracy (Dietrich)who try to get to the border .The plot sometimes recalls a "Doctor Zhivago" in miniature.
Best scenes ,in my opinion,are to be found in the first part: Dietrich,walking across her desirable mansion,all dressed in white ,finding that her staff has left home and joined the revolution;the same,facing a sinister-looking pack of Reds in her park.
The mad station master,ceaselessly repeating that a train is coming into the station (madness was also present in Feyder's former works :"Le Grand jeu "was a good example of folie à deux )