Goofs

In the opening credits of the English-language VHS version, Christopher Lee's name is misspelled as "Cristopher".

Nothing discovered in an autopsy could lead to a conclusion that thoughts and memories have been drained from the deceased.

In a brief panning scene of the train speeding through the night in the snow immediately following the scene where the the guards force open the crate, it can be easily observed that it is actually a small scale toy train and not an actual train.

When Saxton speaks with Mirov in his compartment, the view out the window is stationary and not moving as the train is in motion.

After the guards check the room with two sleeping children, we see a door open in the compartment and in the background we can see the quivering eyes of the kids pretending to sleep.

The ax blows used to break into the crate are much too gentle, and would never have broken the chains and bolts protecting the crate.

The human brains in the autopsy scene are obviously made of foam rubber, as evidenced by their resilience when touched by the actors.

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 whose order?" and the telegrapher answers, "Moscow orders it." Until the Bolsheviks gained control of Russia, Saint Petersburg (renamed Petrograd in 1914) was the capital. Moscow was restored as capital in 1918.

The military forces are not correctly dressed. The first one - O'Hagan - is in a blue suit with red epaulets with a star on his service cap. Stars only appeared after the revolt.

When the train passes by in the shot just before the opening credits, the shadow of the camera crew is visible on the ground.

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 is located far from Manchuria in western China.

The Russians never had a Concession in Shanghai, for the time this movie takes place the only Russian Concession in China was in Tianjin.

Being a Russian monk, Father Pujardov is an Orthodox Christian. Yet, the crosses himself left to right, the Catholic way.

It's highly unlikely that Polish nobility would have an Eastern Orthodox monk as a spiritual advisor, given that the Poles are primarily either Roman Catholic or Jewish.