Wednesday is always preview night at Comic-Con, a chance to explore the Exhibition Hall, where you can get glimpses of new television shows, movies, and games, and buy just about any household item or article of clothing with your favorite superhero or animated character on it. You can also get a sneak peek at full episodes of some upcoming television shows. I watched “Riverdale,” with the Archie Comics characters in a story that is more like “Twin Peaks” or “Pretty Little Liars.” “90210’s” Luke Perry even appears as Archie’s dad.

In this story, Veronica has just moved to town after her wealthy father has lost his money following a Madoff-like fraud scandal. Archie had a sexual encounter with a teacher. Betty’s sister has had a mental breakdown. And Moose is bi-curious.

It is disconcerting at first to see the characters we know from silly jokes in the malt shop and school dances dealing with anguish and possibly even murder. And the actors do not look like teenagers.  But it might work.

Then there’s a comedy called “Powerless,” with a very different take on superheroes.  Vanessa Hudgens plays an insurance claims officer who is responsible for paying for damages caused by superheroes.  And Conan O’Brien is one of the producers of “People of Earth,” with Wyatt Cenac, Oscar Nunez, and Ana Gasteyer as “experiencers” who have had alien encounters.  Both were pretty funny and I look forward to more.