- Dr. Fendelman: [having arrested the Doctor] Take him away. Lock him up somewhere.
- Doctor Who: Is that the way you treat all your house guests?
- Dr. Fendelman: Only the uninvited ones whom I suspect of murder.
- Prof. Adam Colby: ...You're mad, Fendelman. You're mad.
- Dr. Fendelman: In that case, you are hardly behaving in a way conducive to your own safety.