beta
He's doing experiments on his patients disguised as treating them right in front of their faces. There are multiple scenes with him here and all of the things he says are weird and feels like he's playing on their lives. He says things to trigger them and some scenes feel like he colluded with kidnappers, stalkers etc. just to know what the outcomes are.
Even Grayson is a victim of his experiments. But he didn't say a word cause it was "fun" to also observe the doctor. He's a walking red flag!