1972 film by Eugenio Martín
Horror Express (Spanish: Pánico en el Transiberiano, lit. 'Panic on the Trans-Siberian') is a 1972 science-fiction horror film directed by Eugenio Martín, and starring Christopher Lee, Peter Cushing, and Telly Savalas; with Alberto de Mendoza, Silvia Tortosa, Julio Peña, George Rigaud, Ángel del Pozo, Helga Liné, and Alice Reinheart in supporting roles.
Inspired by John W. Campbell's novella Who Goes There?, the film is set in the year 1906, and its storyline follows the various passengers aboard a European-bound Trans-Siberian Railway. They are soon stalked, one by one, by an alien intelligence inhabiting the frozen body of an ancient primitive humanoid brought onboard by an anthropologist.
A Spanish and British co-production, the film premiered at the 1972 Sitges Film Festival, where it won the Critics' Award for Best Script. It has developed a cult following among horror film fans.
Plot summary adapted from Wikipedia, licensed under CC BY-SA 4.0.