Sergeant Preston of the Yukon - Season 3

See No Evil pieces together the truth when shocking surveillance footage reveals breakthrough clues to solve a murder.

Some of the world's most incredible engineering projects now lie in ruins. These deserted places are home to extraordinary mysteries and untold secrets, and we revisit them to understand how they were built, and why they were abandoned.

They were once some of the most advanced structures and facilities on the planet, standing at the cutting-edge of design and construction. Today they are abandoned, dangerous, some of them even deadly. From uninhabited cities to empty factories, these long-forgotten engineering marvels are scattered around the globe. Science Channel uncovers why some of the world's most advanced architectural achievements were eventually left behind in the all-new series Mysteries of the Abandoned.

Each of the six, hour-long episodes of Mysteries of the Abandoned features stories behind engineering wonders, why they were built, and the reasons they were eventually left to crumble. Each story recalls the people who originally designed the structure, their historical significance, and why they were ultimately no longer of use. The premiere episode explores California's Goat Canyon Trestle railway, known as the 'Impossible Railroad,' that required the biggest wooden trestle bridge in the world; Ukraine's Duga, the notorious anti-ballistic missile radar, known as the 'Russian Woodpecker,' that still stands in within the Chernobyl Exclusion Zone; and the Grand Goulets Road in the French Alps, an astonishingly narrow and perilous mountain passageway.

Life Below Zero° follows seven people as they battle for the most basic necessities in the state with the lowest population density in the United States. Living at the ends of the world's loneliest roads and subsisting off the rugged Alaskan bush, they battle whiteout snow storms, man-eating carnivores, questionable frozen terrain, and limited resources through a long and bitter winter. Some of them are lone wolves; others have their families beside them. All must overcome despairing odds to brave the wild and survive through to the spring. Only the mentally fit will be able to endure the extreme test of isolation and endless work required to survive the many months of winter in the Alaska bush.

Murders and mojitos. Fresh off the plane, a British detective joins the police force on the luscious Caribbean island of Saint Marie.

Flying is one of the safest forms of transport. But what happens when tragedy strikes? From human error and accidents to mechanical faults and design flaws, the success of aviation history is punctuated with disaster and catastrophe. It's rare, but it does happen. Follow experts as they determine what went wrong and work out how to prevent these horrific tragedies from happening again. Examine the wrecks and official records, and hear from eyewitnesses, passengers and aviation experts as we reconstruct some of the most tragic disasters in aviation history. Air Crash Investigation looks at what went wrong and how future disasters can be averted.