So rewatched the 5 episodes and it seems like their pointing towards the governor Edwin Tuttle (who they haven't shown but made mention of in the first episode) and his cousin Pastor Tuttle being leaders of the cult. I think some parts of the police force are also in on the conspiracy.
If you remember the end scene of episode 5 where Rust is inspecting the same school that he was asking questions about in episode 3, although he never got to go inside the school the first time he visited. If you remember in episode 3 they said that that was the school that the murdered girl attended and that Tuttle's foundation was the one that funded the school.
Reverend Tuttle was also the one who asked to put together the task force to help solve the case. Maybe he wanted to have control of the investigation. The murderer is clearly influenced by religion and spirtuality in some way. Even Rust becomes suspicious of the task force from 95 when he starts to take on the case again in 2002.
I think people are right when they say present-day Rust is interrogating the detectives and I think he's suspicious of the police precinct. In episode 5 when they ask him about why he's in the crime scene pictures he says "You guys kept this out of the press you must have some friends in high places" eluding to some possible government involvement. As he leaves he refers to the two cops as "company men" which to me makes me believe that he thinks their following orders going after him rather than going after the real killer.
The guy who was married to Dora Lang (forgot his name) says that Reggie Ledeax told him that theirs a place out in the woods where "rich" people go to worship. The fact that the guys are rich also got me thinking that this whole thing goes all the way up to the govenor and his reverend cousin. The other guy in 2002 who tells Rust that the "Yellow King" is still out there also mentions something about powerful people are involved. Another reason why I think the precinct may be in on it is that the cops who were outside of the interrogation room obviously heard Rust's interrogation with him because they heard the guy confess to the double homicide, so they obviously heard him mention the Yellow King. It could be possible that one or both of those cops alerted someone the "yellow king" or somene involved and they called the precinct as the guy's lawyer and told him that he needed to slit his wrist. Might've been a cop inside the precinct who gave him the weapon. We also see in episode 6 that Rust is going to confront the governor and ask him questions. The detectives even ask marty in episode 5 if Rust ever said anything about Billy Ray Tuttle.
*The other examples I'm going to bring up aren't as concrete but I think they might be some merit to them
The scene in I believe episode 2 where there inspecting the little playhouse or shack of the little girl who went missing. The woman said she hadn't inspected the shack since the police came by to inspect in earlier. When Rust and Marty look in they find the bird trap symbol found in every crime scene. Maybe someone involved in the police force whose down with the cult planted it.
I think its possible that the governor and his cousin are part of a religous cult and I think they might be indoctrinating people around the town. I have a crazy theory that that run down school that Rust is examining won't be the only school funded by Tuttle and we might find out that he's using these schools to indoctrinate children in the town including Aubrey. Aubrey mentions how the girls in her school were the ones who were teaching her about the sexual images in school. Later on she embraces the goth cultish look along with her friends and gets involved in a threesome. I think theres some influence within the school maybe the faculty themselves thats getting them to embrace the cult. But thats a crazy theory.
One minor small tidbit as well, anyone notice that Reverend Tuttle has a "Yellow" handkerchief in the one scene he's appeared in so far?
If you remember the end scene of episode 5 where Rust is inspecting the same school that he was asking questions about in episode 3, although he never got to go inside the school the first time he visited. If you remember in episode 3 they said that that was the school that the murdered girl attended and that Tuttle's foundation was the one that funded the school.
Reverend Tuttle was also the one who asked to put together the task force to help solve the case. Maybe he wanted to have control of the investigation. The murderer is clearly influenced by religion and spirtuality in some way. Even Rust becomes suspicious of the task force from 95 when he starts to take on the case again in 2002.
I think people are right when they say present-day Rust is interrogating the detectives and I think he's suspicious of the police precinct. In episode 5 when they ask him about why he's in the crime scene pictures he says "You guys kept this out of the press you must have some friends in high places" eluding to some possible government involvement. As he leaves he refers to the two cops as "company men" which to me makes me believe that he thinks their following orders going after him rather than going after the real killer.
The guy who was married to Dora Lang (forgot his name) says that Reggie Ledeax told him that theirs a place out in the woods where "rich" people go to worship. The fact that the guys are rich also got me thinking that this whole thing goes all the way up to the govenor and his reverend cousin. The other guy in 2002 who tells Rust that the "Yellow King" is still out there also mentions something about powerful people are involved. Another reason why I think the precinct may be in on it is that the cops who were outside of the interrogation room obviously heard Rust's interrogation with him because they heard the guy confess to the double homicide, so they obviously heard him mention the Yellow King. It could be possible that one or both of those cops alerted someone the "yellow king" or somene involved and they called the precinct as the guy's lawyer and told him that he needed to slit his wrist. Might've been a cop inside the precinct who gave him the weapon. We also see in episode 6 that Rust is going to confront the governor and ask him questions. The detectives even ask marty in episode 5 if Rust ever said anything about Billy Ray Tuttle.
*The other examples I'm going to bring up aren't as concrete but I think they might be some merit to them
The scene in I believe episode 2 where there inspecting the little playhouse or shack of the little girl who went missing. The woman said she hadn't inspected the shack since the police came by to inspect in earlier. When Rust and Marty look in they find the bird trap symbol found in every crime scene. Maybe someone involved in the police force whose down with the cult planted it.
I think its possible that the governor and his cousin are part of a religous cult and I think they might be indoctrinating people around the town. I have a crazy theory that that run down school that Rust is examining won't be the only school funded by Tuttle and we might find out that he's using these schools to indoctrinate children in the town including Aubrey. Aubrey mentions how the girls in her school were the ones who were teaching her about the sexual images in school. Later on she embraces the goth cultish look along with her friends and gets involved in a threesome. I think theres some influence within the school maybe the faculty themselves thats getting them to embrace the cult. But thats a crazy theory.
One minor small tidbit as well, anyone notice that Reverend Tuttle has a "Yellow" handkerchief in the one scene he's appeared in so far?
One more thing. I looked up symbolic meanings at this website 
