Horror Express

A 1972 science-fiction horror film, Horror Express follows Professor Sir Alexander Saxton as he transports the frozen remains of a primitive humanoid back to Europe by train. The creature's escape sparks a series of mysterious and gruesome deaths among the passengers, forcing Saxton and his colleague Doctor Wells to uncover the truth behind the eerie events unfolding on the Trans-Siberian Railway. As they navigate this supernatural threat, they must confront an ancient alien intelligence that has been stranded on Earth for millions of years, with a sinister plan to harness human knowledge to build a new spaceship.