Jungle Girl (1941) - chapter 10

Famous Nyoka, the Jungle Girl who is portrayed by beautiful Francess Gifford ends up tied to a pole in a cottage and OTM gagged. She is threatened by a huge gorilla who is trying to break into the hut. In the last moment she manages to shake off her gag and scream for help.
There is more bondage in this serial but this is the only "bound and gagged" scene.

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