Villian(s)  Ape-like alien, zombies

Actor(s):  Christopher Lee, Peter Cushing, Telly Savalas, Silvia Tortosa

Brief Description  Horror Express (released in Spanish as Pánico en el Transiberiano) is a 1972 science-fiction horror film directed by Eugenio Martín. Set in 1906, the film is famously described as Murder on the Orient Express meets John W. Campbell's Who Goes There? (the novella that inspired The Thing). It brings together iconic horror duo Christopher Lee and Peter Cushing alongside American star Telly Savalas.

Plot:
The story begins in the frozen, remote mountains of Manchuria, where British anthropologist Professor Sir Alexander Saxton (Christopher Lee) discovers a frozen, prehistoric humanoid. Believing he has found the evolutionary "missing link," Saxton crates the specimen and boards the Trans-Siberian Express to transport it back to Europe for scientific study. Before the train even departs, a thief is found dead near the crate with his eyes completely bleached white. Once the train is underway, Saxton’s scientific rival, Dr. Wells (Peter Cushing), bribes a baggage handler to peek inside the crate. The prehistoric creature—thawed out and very much alive—picks the lock, kills the handler, and escapes into the train.

As a string of grisly murders plagues the passengers, Saxton and Wells spearhead the medical investigation. They notice that all victims share distinct traits: bleeding ears and completely white, blind eyes. An autopsy reveals a terrifying reality: the victims' brains have been literally smoothed out, stripped entirely of memories, knowledge, and identity. The duo discovers that the threat is not actually the ape-man's physical corpse, but a formless, ancient alien intelligence that was trapped inside it. The extraterrestrial entity absorbs the minds and collective knowledge of its victims through a glowing, hypnotic red stare. When the original ape-like host is gunned down by a police inspector named Mirov, the entity survives by possessing human hosts.

It hops from person to person to conceal its identity while attempting to acquire enough technological knowledge to construct a spacecraft and escape Earth. The alien eventually moves into the corpse of the deceased Father Pujardov and uses its psychic powers to resurrect all of its past victims, forming a blind, bleeding army of undead zombies to massacre the remaining passengers. In a frantic finale, Saxton and Wells manage to separate the back passenger cars from the rest of the train. Just as the possessed train car plunges over a massive cliff, it is obliterated in a fiery explosion, destroying the alien entity once and for all while the surviving passengers watch from safety.