1. Life & Culture

On TV Tuesday, Oct. 15

On TV tonight

Superheroes: A Never-Ending Battle, 8 p.m., PBS (check local listings for time) You know a pop-cultural phenomenon like superheroes has simultaneously achieved legitimacy and day-to-day irrelevance when it gets a three-hour documentary on public television. The least PBS could do is get Hollywood to stop making so many movies about them.

SEASON PREMIERE Baggage Battles, 9 p.m., Travel Among the many pieces of unclaimed luggage being combed though, a leather belt that is somehow connected to Buffalo Bill pops up. We're talking Wild West Buffalo Bill, not the one from Silence of the Lambs.

SERIES PREMIERE Gem Hunt, 10 p.m., Travel A gem dealer, a jewelry expert and a geologist search the world for valuable jewels. Tonight, they try to avoid detection while hunting for rubies in Vietnam. Sounds perfectly legal.

Chicago Fire, 10 p.m., NBC It's really looking like Clarke is the mole in the firehouse. Now's when the writers of 24 would have Jack Bauer torture it out of him.

— Joshua Gillin