Recently finished watching The Sons of Sam: A Descent into Darkness Netflix 4-part documentary. Very well-done, thoroughly researched, and extremely gripping/compelling/intriguing. Also liked the Season of the Witch (Donovan, 1966) "theme" song for the series - very appropriate. I still think DB almost certainly acted alone re: the SOS killings. But, this does present an "alternate take" on this, even though I don't believe that it happened this way.
Some thoughts:
-This panic about cults, etc. that came up in the '70's/'80's was ridiculous & IMHO had little to no veracity. Specifically, the idea that the roleplaying game "Dungeons & Dragons" and the innocent cartoon "The Smurfs" were sinister/malevolent & had hidden meanings, etc. is patently ludicrous.
-I can see how MT could have made the connections between DB & the alleged "cult" due to the close proximity of DB's apartment to the house of the Carr brother (JC & MC), Untermeyer park, etc.
-Yes, there may have been some kind of "cults" that existed in this area where DB lived that "sacrificed" animals, etc. But, I don't necessarily think that DB knew these people and/or associated with them. And, I don't think that they had anything to do with the SOS killings; though they may have been involved in other killings.
-I have concerns about the veracity of what DB is telling MT during the two interviews we saw portions of in the doc. (1993 & 1997). It seems to me that MT is "feeding" DB info. & DB is telling him what he wants to hear. I.e., instead of MT asking DB exactly what happened (which is what he should have done), I see DB picking up on what MT is asking/telling & then forming the narrative around this info.
-I definitely do not believe DB when he says he didn't do all/most of the killings.
-I don't see the "eyewitness accounts" as describing someone who didn't look like DB as being too much of an issue. These types of accounts are notoriously unreliable; most of these happened at night/early evening when it was either dark or getting dark and it would have been hard to make out facial/body details, etc.; and, they all happened relatively quickly.
-The final SOS murder was the killing of SM & the blinding of her bf, RV. This is the one that the doc. claims couldn't have been done by DB because he got a parking ticket a distance away. But, he still could have walked several blocks, done the killings, and then walked back to his car.
-The death of AP (the college student from ND who moved to CA, and was found in a church) was grotesque & horrific. At the end of the doc., it was shown that the perp. had been a local security guard - who the authorities proved was involved back in 2018, and who died before he could be captured. However, despite the doc. implying that this death had something to do with a "cult", I believe the security guard acted alone.
-I agree that MT unfortunately became obsessed with proving that DB didn't act alone. And, apparently trying to prove this took over his life & ruined his health. Sad.