I thought that the podcast about the Zodiac Killer was extremely interesting and very well done. I think that one of the most important aspects of this podcast was the use of music. The creator of the podcast clearly knew how dark the subject matter was and chose music accordingly. I liked how the music was not overpowering either so that the voice of the narrator was crisp and clear. I think that finding this balance is difficult, and I think they did a very good job with it.
I also really liked their use of storytelling. Nowadays, we are so used to the movies where everything is shown to us, so explaining in words the gruesomeness and eerieness surrounding the Zodiac killer's murders is a difficult task on a podcast especially. They did a very good job with the storytelling, and overall their podcast was pretty stellar.
If I had to make one small critique though, it would be that at a couple of places there were a few short pauses/ stumbles that drew away from the rather fluid nature of the podcast, if these were cleared up, I think it would be very hard for me to tell their podcast apart from the professional ones.