Drug Lord: The Legend of Shorty (10 p.m., UNC-TV) – In this Frontline special, two filmmakers set out to interview El Chapo Guzmán, leader of one of the biggest drug cartels in the world, prior to his 2014 capture. Guzman recently pulled off a brazen escape from a Mexican prison.

Also on tonight . . .

Humanity from Space (8 p.m., UNC-TV) – A view from space traces humankind’s influence over the planet.

Knock Knock Live (9 p.m., Fox) – A new live series in which host Ryan Seacrest deploys a team (which includes Albemarle native Kellie Pickler) to show up at people’s doorsteps and surprise them with a chance to win big prizes or meet their favorite celebrities.

Chrisley Knows Best (9 p.m., USA) – Season 3 ends with two back-to-back episodes. First, Todd obsesses about his age, so Mama Faye and her friends try to help him be more accepting. In the finale, Grayson talks the family into staying at a working dude ranch for his birthday.

Tut (9 p.m., Spike) – In the final installment, Tut seeks to destroy the last of his enemies within the palace in order to secure his place in history.

Rizzoli & Isles (9 p.m., TNT) – A murder witness suffers from a condition commonly known as facial recognition blindness.

Royal Pains (10 p.m., USA) – In the Season 7 finale, Divya envisions a new future for her career and family.