Dr. Zaroff: Now this vital secret, what is it? I must know.

Doctor Who: I haven't got one.

Dr. Z: How dare you!

Dr. Who: I was sure a great man like you with a modern scientific brain like you would want my mind to be sacrificed to a heathen idol!

Dr. Z: You know I could have you torn to bits by my guards yes?

Dr. Who: yes!

Dr. Z: I could feed you to my pet octopus, yes?

Dr. Who: yes!

Dr. Z: But you have sense of humor, I too have sense of humour! I need men like you!

(both laugh maniacally)