As was common in German films of the era, this movie was shot without live sound, and all voices were dubbed in post-production. Christopher Lee
and Thorley Walters
were not scheduled to dub their own voices for the English dubbed version (or any other), and were dubbed by other actors. See more
We are both men of logic and we possess extraordinary intellect. But we are both wasting our forces warring against each other and if I may say so, dear Holmes, this is illogical. We should unite our talents and forces. Such a partnership would be sure to succeed.
No doubt it would. Professor.
Then I may assume you accept?
The picture you paint is a very alluring one. There's only one answer that I can give. Much as I regret it, I shall have to continue to waste my energies. I have only one ...