Corrected entry: The characters are traveling by train across mainland Europe. Suddenly, the train arrives at a British station. How would this have been possible in 1938, many years before the construction of the Channel Tunnel?
Corrected entry: Iris and Gilbert are locked in a compartment by Dr. Hartz. When Dr. Hartz returns a few minutes later, we see him in the corridor pause by the compartment door, then enter the adjoining compartment. Once inside, he unlocks the connecting door to go into the next compartment to check on Iris and Gilbert. At this point he leaves through the corridor door without unlocking it. (01:11:20 - 01:15:30)