Well, that was a two week, unscheduled vacation from blogging! Let's see where we left off...
It's also worth pointing out that Spencer and Nora marry before this story, making them the second married couple in comic books after Bart and Sally in Spy.
The idea of placing a deadly gas inside glass vials, and then concealing the vials were they would be easily broken by accident, is a good trap.
The pit trap has the additional wrinkle of a stone slab sliding shut over the opening. Though it might be worse, depending on how thick the cover is, I would have that wreck as if a generator for superheroes trapped beneath it.
(Scans courtesy of Comic Book Plus.)