Discovery Channel (HD)

In the former Soviet Republic of Georgia, EJ and Jeff find themselves in a nightmarish scenario as they're surrounded by 800-pound bears and trapped in a cavern.

Ten fearless drivers face off in a thrilling eight-race showdown across four states - $100,000 in prizes are at stake, and it's anyone's race.

Was the exotic dancer Mata Hari a German spy? Two climbers vanish into legend atop Mount Everest. A ghost's testimony is used to convict a murderer.

Locals race in Alabama for $5,000, and the competition is feisty. The winner goes up against Scott Taylor, who has a surprise in store.

The Great 8 are in Ohio for the next $10,000 race, and Murder Nova is gunning to win two races in a row. Lizzy Musi battles health problems.

Tigre and René are abandoned on the coast of the Alta Guajira Peninsula, one of the most arid regions in the world.

Ten fearless drivers face off in a thrilling eight-race showdown across four states - $100,000 in prizes are at stake, and it's anyone's race.

Failing to find opal, The Mooka Boys embark on a risky mission at night. The Bushmen use a robot dog to help map out their underground mine.

A good Samaritan defends a stranger, an elderly woman does the unexpected, a mail carrier fights for his life.

Criminals target fast food restaurants. A drive-thru employee takes things too far.

In Florida, desperate to stop a suspect, officers chase him through busy streets. In Wisconsin, officers rush to save victims of a mass stabbing.

After a sheriff in Georgia wins election on an anti-corruption ticket, he abuses his position for money, sexual favours and deadly vengeance.

The security and customs services at the border of Sweden are on constant watch to stop illegal items from entering the country. It's their job to detect crime.

When ports of entry are magnets for smugglers of all kinds, Security and Customs Services across Europe's borders are under constant threat.

When ports of entry are magnets for smugglers of all kinds, Security and Customs Services across Europe's borders are under constant threat.

Border Control Spain takes you inside the elite units of the Spanish Civil Guard policing the entry points.

Border Control Spain takes you inside the elite units of the Spanish Civil Guard policing the entry points.

The Bushmen's plan to connect old underground drives calls for a huge drill. Slim Pickings face disaster when their rickety tractor breaks down.

At the borders of Spain, it's the job of the Security and Customs Services to detect threats from drugs, weapons, and suspected terrorists.

At the borders of Spain, it's the job of the Security and Customs Services to detect threats from drugs, weapons, and suspected terrorists.

A riverside brawl erupts in Alabama. A man flees from police on a skateboard, a bouncer defends a strip club, and a store clerk traps a burglar in her store.

A woman has a meltdown in a local bank. A driver causes extreme property damage and a police showdown comes to an explosive end.

A violent suspect holds an innocent woman at knifepoint, officers embark on a high-speed chase, and deputies fight to save a man clinging to a cliff.

A wellness healer promises miraculous cures, but inside his ranch, hope turns to harm. Families expose the dangerous fraud beneath the green drinks.