Im thinking the part where Rust outlines all the missing kid cases along the coast line ties in somehow, they hypothesize the Tuttle ministry is behind it, what with their schools and outreach programs.Arkansas and Missouri could fit into that as they're not directly on the coast itself but fit into the pattern shown on the homicide map in S1
They mention "the sprawl" alot and how the Governor is Tuttle's brother, old families in the area covering this stuff up. At the end of S1 Rust mentions they didn't get em all, to which Marty replies, we were never gonna but we got ours. Im thinking the church in S3 ties into the missing kids cases somehow and this goes way back and is much deeper than the detectives can see at this point. Those hundreds of cases cant possibly all be the work of the Yellow King. I'm thinking they show Rust n Marty on the laptop as an example of cops investigating all this that were silenced or went missing. Would be a delayed really sad ending to S1.
Mind you, this is all conjecture but its getting pretty sick.