Dramatizations of infamous serial killers use real pain to make a quick buck, and “Monster: The Ed Gein Story” is just the latest show to do it … so says a prominent filmmaker with a connection to the series.

We spoke to Osgood Perkins — son of the legendary actor and star of “Psycho,” Anthony Perkins — about the new series … because his dad plays a prominent role in at least one episode.

If you haven’t seen the show, or know about the story, then spoiler alert … Ed Gein’s a vicious real-life killer and necrophiliac whom Robert Bloch — the writer of the novel “Psycho” — loosely based his main character, Norman Bates, on. Perkins played the character in the Alfred Hitchcock film classic.

The real-life Perkins isn’t around to see the portrayal — he passed away from complications related to AIDS in 1992 — so we reached out to his son to hear if he had any thoughts about the portrayal of his father on the small screen.

Osgood didn’t address the portrayal directly … mainly because he hasn’t seen the show — since he “wouldn’t watch it with a 10-foot pole.”

Perkins says streamers have made a huge business on upselling true crime … and says they regularly attempt to give it “glamourous and meaningful content.”

Osgood — a filmmaker in his own right who has helmed such horror films as “Longlegs” and “The Monkey” — says he worries about contemporary culture being “reshaped in real time by Overlords” … adding it’s “increasingly devoid of context and that the Netflix-ization of real pain [ie the authentic human experiences wrought by ‘actual events’] is playing for the wrong team.”

Osgood calls on people to protect history and truth by not reducing it down to the convenient … but instead by “peering behind the veil into the unknowable and loving each other through expansive, new art.”