Spied upon by MI19 in a bugging operation of unprecedented scale and cunning, 4,000 German POWs revealed their inner thoughts about the Third Reich and let slip military secrets that helped the Allies win WWII. The film tells the story of how those conversations were recorded and how they can now reveal, in shocking detail, the heart and mind of the German fighter. Only now have more than 100,000 hours of these secret recordings been declassified, researched and cross referenced. The documentary includes intense, full-dialogue dramatic reconstructions that use the verbatim transcripts of these bugged conversations to reveal the dark heart of the Nazi regime as never before.

After the asteroid impact 65 million years ago — believed to have wiped out the dinosaurs — Australia was set adrift on a lonely voyage in southern seas. With host Richard Smith at the wheel, NOVA travels this walkabout continent to uncover how it became the strange island it is today. Australia’s many unusual creatures, like the kangaroo and the cassowary, tell a tale of isolation, change and resilience. Australia’s long history has seen mountains rise and fall, seas come and go, and whole kingdoms of life triumph and disappear. In this final episode, NOVA races down the last 65 million years to the present day.

Hear the story of the world-famous Lipizzaner stallions, from their origins in ancient times to the almost unknown drama of their rescue in 1945. The film, which focuses on the bond that develops between horse and rider, begins at the Spanish Riding School in Vienna. Here the perfect harmony between horse and rider, as well as the beauty and power of the magnificent white stallions, is celebrated in their impressive performance. Their carefully choreographed movements were originally intended for war. Then, only the strongest and most athletic of the horses were chosen. The Lipizzaner stallion was bred for its courage, strength and character, but the horse is also gentle, sensitive and exceptionally responsive to praise.

WSKG’s Artist Café showcases an expansive variety of national and local artists including photographers, dancers, poets and many more.  This week we feature artist Gregory Euclide, Chaplin Star Rob McClure and guitar maker Charlie Hoffman.

In the aftermath of the Boston Marathon bombings, the threat of terrorism again confronts Americans. More than a decade after 9/11 and hundreds of billions of dollars later, there are pressing questions about whether America’s investment in its “terrorism industrial complex” has made us safer. In FRONTLINE’s “Top Secret America,” Pulitzer Prize-winning reporter Dana Priest traces the journey from 9/11 to the Boston Marathon bombings and investigates the secret history of the 12-year battle against terrorism.

In the second episode of Ken Burns’s DUST BOWL, experience the gradual relief as the families of the plains seek new lives in California and government conservation efforts — and a break in the drought in 1939 — eventually stabilize the soil and bring the farms back to life, but with dangers of another Dust Bowl facing future generations.

The blistering deserts of southern Arizona have been littered with the scorched and desiccated bodies of more than 2,000 illegal border crossers in the past decade and a half. The grisly task of locating and identifying them falls to overwhelmed local coroners and tireless volunteers, who attempt to provide closure to devastated families.

ANTIQUES ROADSHOW hits the open road to visit the Sturgis Motorcycle Museum & Hall of Fame — located in the town famous for its annual motorcycle rally. Highlights include TWA travel posters; a 1932 signed photograph of the national treasure, Mount Rushmore; and a Rock-Ola juke box valued at $2,000-$3,000.

When Scotland Yard dismisses the women’s theories, they realize it’s up to them to stop the killer before he takes his next victim. They identify a suspect and use Lucy to lure him into a trap, but their plan goes badly awry and Lucy is assaulted. Shaken, the women take a different approach, contacting former war department members. Susan plans to meet with a psychiatrist whom she believes has helpful information, completely unaware of the danger that awaits her.

Mr. Grove takes over in Harry’s absence, but faces irate temperance marchers and other challenges. How would Harry handle it? Agnes gets to know Henri, the window dresser.