By Jeff Jarvis
March 19, 1984 12:00 PM

PBS (Monday, March 19, 8 p.m. ET)

This documentary about Hillside Strangler Kenneth Bianchi, convicted of seven murders, has the awful air of a televised True Detective: too many pictures of naked dead bodies; too many grisly details. The producers try to paint it as a public-service show about mass murder. That’s flimsy. But there is some absolutely fascinating TV here in tapes of psychologists’ jailhouse interviews with Bianchi. The footage shows his multiple personalities: The polite Ken switches to the psychotic “Steve,” who snarls, “Killing a broad doesn’t make any difference to me.” Some shrinks buy the act, but one doesn’t and argues that Bianchi is nothing but a frighteningly accomplished actor. (Part two airs Monday, March 26.)