A gripping combination of prison horror stories and armchair tourism, “Locked Up Abroad” (9 p.m., National Geographic) enters its fourth season with a return to the harrowing granddaddy of all incarceration tales, “Midnight Express.”

Billy Hayes, author of the book that inspired the Oscar-winning movie, reveals details that, for legal reasons, were omitted from his original account. He recalls his career as an amateur drug smuggler with a zest that borders on the long-winded. His anecdotes of arrest, imprisonment and eventual escape are accompanied by dramatic re-enactments shot in period documentary style.

• Tourism of a different sort unfolds as “Man Shops Globe” (9 p.m., Sundance). Over the course of eight episodes, Keith Johnson, a professional buyer for a tony retail chain and catalog, will travel from Cyprus to Sweden, by way of Syria and Scotland and other locales. All in search of just the right fabric, antiques or furniture.

“Globe” allows him to interact with the world’s greatest collectors and shopkeepers and interview artists and craftspeople from many cultures. And someone else picks up the check!

Like Anthony Bourdain (“No Reservations”), Johnson has one of the world’s most enviable jobs.

• In what is now a midsummer holiday tradition, Niecy Nash and her crew anoint one disheveled dwelling as the nation’s neediest case on “Clean House: Search for the Messiest Home in the Country” (8 p.m., Style).

This year, they travel to Lynwood, Ill., where a couple lay entombed in items accumulated during more than 20 years of shopping sprees. We’re told that they haven’t cleaned up in eight years.

As on several episodes of A&E’s “Hoarders,” the clutter couple has been turned in by their children. They hope that a visit from “Clean House” will return the home to some semblance of normalcy and hospitality.

• New Orleans becomes the setting for the 24th season of “The Real World” (9 p.m., MTV). Eight strangers, each young enough to have spent their entire life watching “The Real World,” move into a posh mansion in the Big Easy and try to act naturally.

Tonight’s other highlights

• Mysterious deaths break up social cliques in the 1988 high-school satire “Heathers” (7 p.m., IFC), the film that introduced many viewers to Winona Ryder, Christian Slater and Shannen Doherty.

• Too many vacation plans on “Modern Family” (8 p.m., ABC).

• Josh finds his birthday eclipsed when Brent rents out the farm for a wedding on “The Fabulous Beekman Boys” (8 p.m., Planet Green).

• “Mythbusters” (8 p.m., Discovery) challenges tall tales about alcohol.

• A priest walks into a bar on “In Plain Sight” (9 p.m., USA).

• Complications ensue during a trip to the pharmacy on “Curb Your Enthusiasm” (9 p.m., TVGN).

• “Through the Wormhole with Morgan Freeman” (9 p.m., Science) invites scientists to ponder just what anticipated the Big Bang, generally assumed to have occurred 13.7 billion years ago.

• The top nine perform on “So You Think You Can Dance” (7 p.m., Fox)

• Jerry Seinfeld, Jesse Eisenberg and Mumford & Sons are booked on “Late Night with Jimmy Fallon” (11:35 a.m., NBC)