- [Ellen has been recaptured and placed in a straitjacket after escaping from a mental institution]
- Dr. Trevor: I hope you'll think next time before you give us all this trouble.
- Dr. Trevor: [to his nurse] Gag her!
- Ellen Summers: No! No, please leave me alone!
- [the nurse ties a thick white cloth over Ellen's mouth, then gives Dr. Trevor a syringe full of narcotics]
- Dr. Peter Brady: [invisible] I wouldn't do that!
- [the Invisible Man slams Dr. Trevor against a wall, removes Ellen's gag and helps her to flee]