Stefanie Powers knows a thing or two about being cooped up. She was kept in a small room in Die Die My Darling and on Hart to Hart she was kidnapped every other episode at least. In the "classic" seventies sci-fi movie The Astral Factor, also known as The Invisible Strangler, she's the girlfriend of cop Robert Foxworth, and seems to be cooped up by choice, high on something for the entire movie and seemingly never leaving his apartment. What does one do when cooped up? Why, read comics, of course! She is seen reading a comic book at one point, and, nerd-o that I am, I tried to identify this one but couldn't. It certainly, by the lettering, appears to be Superboy and the Legion of Superheroes. The Superboy part is especially clear. But I could not find a cover that matches. Doesn't help that the movie is grainy. It, the cover, looks as if someone is sitting on the left and looking at people captured on giant white slabs, or something. My hypothesis is that this comic doesn't actually exist, but was whipped up by the props department, which is what sometimes happens. It was possibly made by cutting up pre-existing comics and making a collage so it could not be identified. Which means some defenseless seventies comics were destroyed. Oh, the humanity!
Later in the movie Stefanie gets off her butt and starts earning her keep with a job selling GRIT. Okay, not really.