@Hillary H you make it sound like SAO:Alicizations's code 807 thing which i just finished watching! :D But yeah you're theory makes more sense and definitely hits closer to where ths seems to be headed as they locked the detective outside and are doing things along those lines. But again because this is jack townsend universe, (i haven't actually read tftgs 2 or 3 but when i hear from MCP it's really not certain whether anyone imp. Dies other than antonio) i don't think anyone here is going to die, and if someone does die it's probably gonna be only hope so her traumatic life ends and wolfgang can also have a new path ahead. So this leads me to that tobias is probably not Dead dead, as in he is just gone until they all die again. But the problem with this is that they won't resurrect if they die not being able to beat the game fair and square a.k.a game wins :- they just die. So (and this isn't related to clues, just speculation of plot) there is another one of those resurrections coming where they all mess up and it doesn't go as the "house (or the ones incharge?)" Want it to.
So what comes next is finding attic key before "koda" (finds them!) which was a clue to everybody sharing things with each other, like bridgett being revealed as a spy and Claire's secret and also tobias' secret along with wolfgang's and hope's too but there may be something left on those two. Also loren still have some secrets along with jerry and jack so theirs may come up in next part as koda is about to have them break the ice. But i think jack's secret might be safe as long as wolfgang who was suspiciously not completely revealed to be a psychic decides to reveal it. Although this may just be a tangent I'm going on so nevermind me.
Edit#1: wanna point out that sub codes and parent codes may be referring to the clues we have got so far.
"...sometimes you get really wordy, bordering on pretentious" dark gods words from book 1 ring true for me here. Maybe I'm being outright pretentious lol.