Horror Express

Prof. Sir Alexander Saxton (as Cristopher Lee)

Dr. Wells

Captain Kazan

Father Pujardov

Countess Irina Petrovski

Inspector Mirov

Yevtushenko (as Angel del Pozo)

Miss Jones

Conductor Konev

Count Marion Petrovski (as Jorge Rigaud)

Baggage Man

American Passenger

Creature (as Juan Olaguibel)

First Telegraphist

Second Telegraphist

Grashinski

Station Master

Russian Guard

Vorkin

Captain O'Hagan

(uncredited)

The train interior sets and the train model used for the exterior shots were the same sets that the producer/director had just used for their collaboration Pancho Villa (1972), which had just finished production and which also featured Telly Savalas.

The film was released only two days after Dracula A.D. 1972 (1972), which likewise starred Christopher Lee and Peter Cushing.

During the production there was only one set available for the interior of the train cars. All of the scenes for each train car had to be shot at once and then the set would have to be reconstructed for the next train car.

The opening credits say the movie takes place in Peking, but all the railroad station sets have signs that say "Shanghai" in Chinese. The cast's dialogue also refers to their train trip starting in Shanghai.

The cave where the creature is discovered is identified as being in Manchuria, the far north eastern region of China, but is also identified as Szechuan province which located far from Manchuria in western China.

When the telegrapher announces what the government officials want done with the train and its on-board monster, the telegrapher says that the train is to be shunted to a dead-stop side track, further up the line. The interrogator asks, "Upon who's order?" and the telegrapher answers, "Moscow orders it." Until the Bolsheviks gained control of Russia, Petersburg was still the capital. Moscow was restored as capital in 1918.

Father Pujardov: There's a stink of hell on this train. Even the dog knows it!

Dr. Wells: It's called "squeeze" in China. The Americans call it knowhow.

Dr. Wells: What are you going to astound the scientific world with this time?