It's an okay documentary, but in no way more informative, than what else is out there. Maybe better compiled. We do hear a Ted Bundy voice-over from time to time - but mostly recorded in the time he still denied all the crimes. It seems a weird choice, but must have been the only material, they had to use.
Since he confessed in great details post-conviction, in my opinion it was unwise not to include more of this material. It feels like most of the docu is made right after the trails, but before the confession, and therefore sheds no light on motive and/or the actual modus operandi (i.e staying with several dead victims all night cuddling, coming back and repeatedly washing their hair or applying make-up, the five heads he keept in his apartment for a period of time ect.). We hear Bundy speak about the motive in the 3rd person for maybe 5 minutes altogether. Not what I had expected, since they stated in the first episode, they have 80-100 hours of interview.
I've seen a lot of documentaries about Bundy, where we followed the investigation, and about 90% of this docu is about and/or the same as this - recaps of the crimes and interviews with lawyers, police and press. So not that much "interview with a killer".
The most interesting is the last episode, where we see a lot of raw material from the trial, that I hadn't seen before. It didn't really offer something new, but it was somewhat interesting to watch - maybe because I favore courtroom-drama.
All in all, I got absolutely no new information, and I would actually say, you would learn more reading the wikipedia page :-/ But if you know nothing or very little about Ted Bundy, are interested in serial killers and have lived under a rock (or is very young), this could probably be very interesting to you.