The alleged solution that was presented in the documentary should be regarded as fictional, too. I’m pretty sure that Craig, Kevin, David and Ed know well that this solution doesn’t make much sense. As far as I know, none of them has published a detailed explanation of it so far. I don’t expect that a peer-reviewed magazine or conference will ever accept such an explanation.
All in all, I think that The Hunt For The Zodiac Killer was a great show – nothing more and nothing less. I’m pleased to see that this series has drawn a lot of attention on the Zodiac Killer case and on codebreaking in general. Craig, Kevin, David and Ed have become TV stars for a few weeks – they certainly have deserved it because of their great work over the last few years. The blog posts I wrote about this documentary received thousands of page hits within hours – I hope some of the new readers will stay. I can imagine that someday a successful cryptologist will say: “My interest in cryptology started when I saw this Zodiac Killer thing on the History Channel.”