Yeah, I was thinking that too. If you want drugs then this reminds me of another detective story in my head kind of inspired from Blue Velvet. There's been a suicide in their city, big drop, and the teenager who's died has connections to a really small town, difficult to find. The place is really campy and conforms to virtually every stereotype and archetype shown in old-school daytime comedies. Meanwhile, there's a side story about the kid who committed suicide in the past tense and his life and reasons so. Anyway, it's pretty surreal because these are noir-ish, pulp detectives, in this town of weirdly rigidly conforming roles (Do you watch anime? Go watch Another if you haven't already, similar idea with kids and adults acting fine and censoring each other, rigidly obeying rules when there's something clearly amiss). But as tension gives up, and again, playing with sad honesty and disturbing themes is that one of the two detectives "falls in love" with one of the woman there and slowly becomes "brainwashed" too (this is basically his mental breakdown--his repressed longing for this idyllic, though unnatural, way of living as compared to the urban harshness of reality) and tries to kill his friend. He may even succeed, idk about that, but essentially the detective finds out the town is controlled by once outcast, brilliant, kid who is a puppeteer using airborne narcotics (they literally get addicted to air, he withdraws, shit goes bad, he controls the place) to dominate the people. It's implied that the side-story all along has been about the antagonist, or if the puppeteer is older, his son. Idk, I think that can be reworked into something more supernatural.
As for the first idea, yeah, I was thinking that too so I guess it could move away from supernatural and more to lit or art themes (not classic lit, mind you) but I guess this whole idea that what you create is a part of you and yet isn't, and the responsibility we have to our creation, as well as its power. Though I don't think it's adaptable to a comic, I have an idea better highlighting this. It's kind of like The Unwritten meets Alice in Wonderland (writer drops into the highly fantastical world of his stories, shit)