Not the best example
This is mostly a pretty silly issue. The Supergirl lead story is ok, but involves a strange new direction for the heroine as she moves to college to pursue training in acting. It is not a very well thought out concept, as acting would likely not be very interesting for a person that can accomplish amazing feats. The rest of the story revolves around a wave of actors that are being murdered for what turns out to be a nonsensical reason. The backup story is a fairly generic one where Jeff Sloane is accidentally drawn into a Medieval world. This second story is more about fun than an actual plot. The entire issue is a bit of a disappointment, and not the best example of silver age storytelling.