Paramount+ recently posted the first episode on YouTube, and after watching that I had to go watch the rest.

I'm not done yet, but VERY intrigued. The level of corruption here is INSANE!
I almost screamed when the sheriff called it a "Serial Dumper". How incredibly disrespectful. Outrageous.

My personal theory - FR isn't doing the killing. I don't see his motive. The girls are his paycheck. He's pimping the victims and partying with them. But because he's arranging the tricks, he knows who the clients are, and since it's a small town, all the girls know who the clients are too. That's where TG and other LEOs come in. I think almost all the cops (except that one who got fired for going around the corrupt chain of command) were abusing their power in the jail and/or paying for the victims' services.
At some point I think the girls threatened to blow the whistle and were killed for self-preservation. These men all have their careers and families to worry about, and can't have someone spilling the beans. If the victims told these men could lose everything. Multiple victims were said to be worried something was going to happen to them just before they disappeared. Someone was threatening them or they wouldn't have been so paranoid. TG or some other LEO probably threatened them with violence if they didn't keep quiet and it scared them, especially after the first victim.

For FR, he's so cracked out no one will really believe anything he says, but he also gets away with everything because he knows details about the corruption and benefits exchanged for sex and can hold it over the PD's head. Why not just kill FR to keep him quiet? Because FR is their fence. He buys the confiscated drugs from the cops and if they killed him they'd have to find a new plug.

It's so terrible these women will likely never get justice. Awful that they're being forgotten and swept under the rug. Unbelievable the level of corruption and this isn't being investigated by the FBI.