Horror Express (1972)
In 1906, Professor Sir Alexander Saxton (Christopher Lee), a renowned British anthropologist, is returning to Europe by the Trans-Siberian Express from Shanghai to Moscow. With him is a crate containing the frozen remains of a primitive humanoid creature that he discovered in a cave in Manchuria. He hopes it is a missing link in human evolution.
The film was directed by Eugenio Martín, produced by Bernard Gordon, based on a screenplay by Arnaud d'Usseau and Julian Zimet.