Joseph Mell credited as playing...
Dr. Hugo Wagner
- Dr Hugo Wagner: But you're sacrificing a human life!
- Dr Alfred Brandon: Do you cry over a guinea pig? This boy is a free police case. We're probably saving him from the gas chamber.
- Dr Hugo Wagner: But the boy is so young, the transformation horrible -
- Dr Alfred Brandon: And you call yourself a scientist! That's why you've never been more than an assistant.