Cold case

The family tied to one of our most mysterious whodunits has been largely quiet in recent years, but it's back in front of the cameras for "The Killing of JonBenét: The Truth Uncovered." The filmmakers promise new details and "shocking" evidence that sheds light on who killed 6-year-old beauty pageant queen JonBenét Ramsey in Colorado in 1996. Let's see if the legal system agrees.

8 p.m. A&E

The outsider

"The Comedy Central Roast of Rob Lowe" was designed to bash the easiest piñata from the Brat Pack collection, but early word from the taping has it that the celebrity panel, which included Peyton Manning and Jewel, found much more glee taking swings at Ann Coulter, who somehow wandered onto the firing range. Comedian Jimmy Carr even goes so far as to suggest that the conservative commentator kill herself. Tune in to see if that line makes the final cut.

9 p.m. Comedy Central

Up in smoke

Those pining for new adventures from "Broad City" will be somewhat appeased by "Mary+Jane," an attempt to put a modern feminine spin on the Cheech and Chong routines. Scout Durwood and Jessica Rothe are just fine as the door-to-door weed peddlers who would rather be hipsters than drug lords, but this slacker act is getting a bit stale.

9 p.m. MTV

Neal Justin