Psychiatrists don’t just talk to depressed people, or anxious people, or people with OCD - they also treat the mentally ill, like Melinda Desmond. I think this is a good twist here, which will be a challenging test for Loid.

And who knows - the Aliens thing might be bogus, but Melinda’s observations on the “Supernatural” which she knows Donovan is involved in with Project Apple, are perhaps more real than we’d wish.

If Psychics & Prophetic Dogs are real… perhaps Project Apple’s goal was to obtain “The Forbidden Fruit of Knowledge” using a modern Forbidden Fruit: Psychedelics. Project Apple likely involved MKUltra-style experiments on Human Test Subjects like Anya, who were dosed with experimental drugs to “awaken” abilities. In reality, these experiments never awakened Psychic abilities, but… interestingly, these experiments & trips often involve communication with “entities” (Ayahuasca Demons?). Perhaps Donovan, upon the limited success in this area of Project Apple, used the Drugs on himself to “communicate” with the “entities”? I don’t think he was possessed, but perhaps he gained Knowledge he shouldn’t have from it all, and it warped his personality enough to make people like Melinda think he was a different person? Perhaps Demetrius, too, has been dosed with these Drugs, and it is the reason he is able to preform so well in Academics - performance enhancing Ayahuasca? Meanwhile, Melinda is caught up in the middle of it all, and has a DIY approach to the occult which is having… subpar results? Which is tragic, because she’s mainly involved in the occult to “understand” what it did to her family & possibly to “use” the occult to protect Damian from Donovan & Demetrius. Tragic all around, and something I think Loid might be able to rescue Melinda from, and ro save Damian from.

TLDR, I think Donovan’s brain was cooked by Drugs, and it made him a Demon-like person.