Revisiting "The Wheel in Space," in preparation for this post, made me sad -- not the reaction I was expecting. "The Wheel in Space" is a largely ignored serial, one that I realized during my latest rewatch is even better than I'd remembered. But I was also reminded that a key reason it's under-appreciated is because four of its six parts are missing. And that is to say, the visuals are missing. But here's the thing: the audio is still there. And there are amazing reconstructions: Loose Cannon (obviously) did one, and I see, online, at least two others that I like. And Wendy Padbury narrated the audio book. So there are all kinds of ways to "watch" and appreciate "Wheel in Space" even though only two of the six episodes survive in their entirety, but I've come to realize that some fans -- even some diehard ones -- won't, because it calls for the kind of viewing effort we're not used to these days.