Ann Bolton portrayed by Stirling is captured by the bad guys and very nicely tied up in a fron hog-tie and gagged with a dotted bandanna. She is tied up for the whole time during which the hero fights the villains. In the end of the chapter the ship where they are is blown up.
This is not my rip. I was unable to find any source file so I uploaded a video which I got some 7 years ago. The credit for this scene goes to the unknown did-clipper. I wonder if there is somewhere a scene from Chapter 2 where we learn how they escaped their doom.
Another classic gem. Seventh chapter shows Sheila (Linda Stirling) tied to a chair by Purple Monster and his henchman and gagged with an ubiquitous white cloth over her mouth. This chapter ends with the house being blown up but in the beginning of Chapter 8 we learn that the hero and Sheila are safe thanks to Sheila's ability to remove the gag in time.
In the last chapter she discovers a secret passage for which she is once again captured by The Purple Monster and his henchman, taken downstairs, tied to the chair and gagged with a white handkerchief. Later she is rescued by the hero who fights against the villains while she is still bound and gagged.
This serial offers quite a lot of bondage for Linda. She had 6 scenes in 8 chapters. Three of them were full treatment and one was gag only.
Claire (Linda Stirling) is captured by Captain Mephisto's henchman who hogties her hands and feet together in front of her and uses an obligatory white handkerchief to gag her. While the hero is fighting him she falls down on the floor and proves that she isn't a helpless damsel in distress at all by grabbing a gun and shooting the villain.
We saw Claire getting captured in the previous chapter and now she is also tied to a chair and gagged by Mephisto himself. The hero comes to rescue her but luckily for us before he can remove her gag he is stopped by the Mephisto and the fight breaks out. Claire once again proves that she is not only a helpless and weak woman and punishes Mephisto for not tying her legs by kicking him twice during the fight.