It's not TV, it's HBO

I’ve looked in the past and gotten nowhere. It seems like an easy enough task but it’s evaded me. Its a movie that, the scenes that I saw continue to haunt me for whatever reason.

From what I recall; there’s an evil lanky narcissistic doctor who can take over peoples minds and make people suffer and die by controlling their minds and specifically a few teenage girls that he basically holds hostage from her parents. The other scene that I remember is when the crazy doctors lab worker realizes that the doctor is evil and torturing this young girl/ girls, but he intercepts and mind controls the lab assistants face to bleed through her nose and caved in her skull. The f doctor does this as a reminder to the girl to just comply with him . Then there’s a strange scene in mostly black and white where the doctor is reborn as like a black oil slick or like this murderous shadow. The movie haunts me l….what movie am I describing ???? Please help