The Keys to Happiness (1913)
Original title: Ключи счастья
The Keys to Happiness is a 1913 Russian-language drama movie directed by Vladimir Gardin and Yakov Protazanov, with a running time of 2h 46m. It stars Olga Preobrazhenskaya, Vladimir Maksimov and M. Trojanov.
Directed by Vladimir Gardin and Yakov Protazanov, this two-part epic was the most expensive Russian film at the time and smashed box office records. It is now considered lost, with only a 4 minute clip surviving.