When it comes to true crime series, “John Wayne Gacy: Devil in Disguise” (Peacock, streaming) takes on the grisliest case — the Chicago guy who killed and buried 33 under his house in the late 70s. The six-part series has a lot, including investigators who recall the case, an ex-wife, and Gacy himself, who once paraded around as Pogo the clown, trying to talk his way out of it in a prison interview years later.

Another streaming true crime series, “Miracle Fishing: Kidnapped Abroad” (Discovery+, streaming), is about a family that was kidnapped in Colombia and somehow got to videotape it. 

The ensemble comedy “Superstore” (NBC, 8 p.m.) closes down for good after six seasons. Original star America Ferrera returns in tonight’s back-to-back final episodes. 

Joe Biden holds his first Presidential Press Conference (CNN, ABC, CBS, NBC, MSNBC, CSPAN, 1:15 p.m.). 

Andy Cohen hosts and produces the seven-part “For Real: The Story of Reality TV” (E!, 9 p.m.) that looks at the rise of reality television (of which he’s also of course played a big part). It’s to dig back to the days of “Joe Millionaire” and “The Swan.” Next week’s episode includes an interview with Eric Nies, from the fist season of “The Real World” — who wasn’t part of the current reunion series on Paramount+. But tonight is largely spent promoting “Keeping Up with the Kardashians” (E!, 8 pm.). 

Dick Wolf’s reality show about first responders in New Orleans, “Nightwatch” (A&E, 10 p.m.), returns for a fourth season after a three year absence, this time focusing on the EMS.