This is on an NPR show I've never heard of. Our local station doesn't carry it. But I'm listening to the episode right now, and the authors do are doing a good job presenting the barebones issue they're dealing with. I'm not hearing much in the way of arguments, though, just quick summaries of positions. But it's done in an imaginative way, just because of the Doctor Who context. The particular issue is the genocide of the Daleks issue from the Fourth Doctor serial "The Genesis of the Daleks" (along with the general issue of pacifism and the Doctor's resistance to violence). There's more about the show itself than the philosophy, but I won't complain about any intelligent publicity for the show and for what I hope to be an excellent book.
I really wanted to submit something on the ethics of time travel for this book, but the editors wanted full submissions, and I can't afford to devote the time to write an entire chapter that might not get published. Most editors in this series and the similar Wiley-Blackwell series sort through a larger number of proposals, select their chosen entries, and then commission the people they choose to write the chapters. These editors wanted entire chapters that would likely not get published anywhere if they weren't accepted.