Deckhands pay in blood as captains make up for time lost to the storm; on the Cornelia Marie, Josh takes the wheel as Casey conducts surgery at sea; Brenna A tests the mettle of a former Marine; a call from home has Sig facing a worst-case scenario.

In storm-driven seas, Cornelia Marie's crane goes off the rails, smashing Josh and Casey's wheelhouse and injuring deckhand Taylor; Sig risks navigating a rocky passage in treacherous conditions, and the Wizard crew face a rogue wave without warning.

As arctic super-storm Elsa intensifies, a forecast warns of isolated waves of unusual size; trapped in the crab-rich northern grounds, the Cornelia Marie, Wizard and Southern Wind haul pots as big as the waves, until one boat faces a 60-foot monster.

Keith is forced to hand over the Wizard; Josh fights for the helm despite a bad showing; major engine trouble threatens Wild Bill's season.

Just miles from the fleet, the fishing vessel Destination disappears without a trace; during an unprecedented investigation, the mystery can finally be solved; the captains must make big changes or risk sailing into the same peril on the Bering Sea.

The wrath of Arctic Storm Elsa hits the Cornelia hardest as a breakaway pot thrashes Josh and Casey's crew; Capt. Keith orders deckhands onto the stack as Elsa's icy blasts threaten to capsize the Wizard; the Saga takes a rogue wave.

Josh and Casey haul their all-time biggest pots, starting a rush to the Russian line; Capt. Bill gets inside intelligence, while Harley confirms numbers his own way; Arctic Storm Elsa builds in fury, casting a deadly spell over the fleet.

Greenhorns arrive each season looking to pocket thousands of dollars for a few week's work; the captains are joined by a clinical psychologist to talk about the best way to train the new guys, comparing tough love to new-school methods.

On the brink of failure, Josh Harris discovers secret fishing grounds in his late father's logbooks; a deck mishap could end Jake's season; the Coast Guard braves pitching seas in an attempt to hoist an injured sailor from inside a ship's tank.

With Mandy alone at the helm, a freak accident threatens the Northwestern crew; Josh changes course on the Cornelia while Casey sleeps; Harley's launcher snaps at the worst possible moment; a short circuit cuts power to the Wizard's forward lights.

As the first arctic storm of the season arrives, Saga's deck boss takes a knife to the ribs; Josh and Casey's record-setting haul gets interrupted when a hand gets tangled in the coiler; Capt. Bill takes one last stab at motivating a lazy greenhorn.

Atop the king crab super swarm, full pots boil over into conflict as young guns Sean and Jake join forces to set down Sig; Keith and Harley re-ignite a decades old rivalry; Sean faces the long arm of Alaska law when crab in his tank come up short.

The wrath of Arctic Storm Elsa hits the Cornelia hardest as a breakaway pot thrashes Josh and Casey's crew; the Cornelia Marie, Wizard and Southern Wind haul pots as big as the waves, until one boat faces a 60-foot monster.

Josh and Casey risk a 500 mile trek north to the Russian line; Jake tracks a fast-moving crab horde; Sig does double duty on the Northwestern; the Bering sea cracks the Wizard's 74 year-old steel hull; the Colburns face the loss of their father.

As winter intensifies, Sean faces an engine-room fire; the Summer Bay deck boss suffers a season-threatening injury; Harley offers a trial run to his nephew; Monte races to fill Wizard's Bairdi quota so Keith can say farewell to their father.

The coldest weather in nearly a decade threatens to crush hulls and freeze the sea; Monte must fill his tanks fast to get home to his ailing father, while a shocking mishap leaves a Hansen family member clinging to life.

Jake makes a devil's bargain, huge crab for hidden perils, until his boat is on the line; Sig serves cold justice at sea; Wild Bill chases a King Crab jackpot; the Cornelia Marie crew learns that the wheelhouse always wins.

A massive arctic hurricane shocks the fleet with high winds and big waves; an unstable stack threatens to capsize the Saga; as the captains rush to pull and set pots before harbor, Wild Bill risks driving straight into the storm to snatch his quota.

As a flooding collision void threatens to sink him, Keith fights to keep the Wizard afloat; a missing boat part leaves Jake stranded at sea; Sig gets ready to pass the torch to Edgar, but brotherly tension arises when he can't give up the reins.

Sig embarks on a daring midnight mission to shake his rivals; the Cornelia Marie pays the price for a rotten alliance, and an injured deckhand could force the boat in early; Keith gets big news from his doctor on a mystery illness.

Sean and Casey forge an alliance, but the first catch threatens the tenuous agreement; Wild Bill takes a big risk on a new idea hoping it will make up for a bumpy start; a dangerous mistake jeopardizes Jake's offload.

The gold rush in Alaska isn't confined to the state's precious ground. It's taking place on the sea ... or more accurately, on the bottom of the frigid Bering Sea. This series, from the creators of the Emmy-winning "Deadliest Catch," follows four gold dredges and their eccentric and driven crews who risk their lives to find as much gold as possible before winter sets in and it's too dangerous to dive. The custom-built rigs, some barely seaworthy, include an 80-foot barge run by the most successful gold dredger in Nome, Alaska, and a modified skiff that seats only two people.

"Alaskan Bush People" is a reality-documentary series that introduces the Brown family -- Billy, wife Ami and their seven grown children who -- according to Discovery -- are interesting because "they are unlike any other family in America." The channel says they are so far removed from civilization that they often go six to nine months each year without seeing an outsider. They refer to themselves as a "wolf pack" and, perhaps due to isolation, have their own accent and dialect. The Browns live in the Copper River Valley, where temperatures can drop to 60 degrees below zero, and the family recently relocated and built a cabin there because, they say, their former home of many years was seized and burned down for being in the wrong location on public land.

The breathtaking beauty of Alaska sometimes hides the fact its winters can be incredibly harsh, especially for those who live in the state's outlying areas. "Alaska: The Last Frontier" perfectly illustrates this reality, as the series profiles life for the Kilcher family in the isolated community of Homer. For four generations the Kilchers have lived off what their 600-acre homestead has provided, but cultivating that living is never easy. Led by patriarch Atz Kilcher and his brother Otto, the family spends the short summer and fall gardening, hunting and fishing for food, gathering supplies from the land and preparing their animals for the winter. Viewers, who may or may not have a fancy phone by their side while watching on their big-screen high-def TV, also see the Kilchers living off the grid, where running water and electricity aren't daily staples, nor is contact with the outside world. Atz, by the way, is the father of music superstar Jewel.

When bluefin tuna season ends in Gloucester, Mass., it's just beginning in North Carolina's Outer Banks, a perfect opportunity to pit North vs. South in a pro fisherman contest for the ocean's most lucrative prey. Venturing south are the best crews from Gloucester to take on top local fleets in the treacherous Outer Banks, where the weather is more unpredictable than up north, and the seas can be extremely rough. The Gloucester rod-and-reel vets must master "greensticking" -- trolling artificial squid from a 30-foot fiberglass pole to lure the elusive species to the surface. Top-dollar bluefin can be worth as much as $20,000 each, but a short season and small government catch quota means explosive rivalries surface quickly.

When bluefin tuna season ends in Gloucester, Mass., it's just beginning in North Carolina's Outer Banks, a perfect opportunity to pit North vs. South in a pro fisherman contest for the ocean's most lucrative prey. Venturing south are the best crews from Gloucester to take on top local fleets in the treacherous Outer Banks, where the weather is more unpredictable than up north, and the seas can be extremely rough. The Gloucester rod-and-reel vets must master "greensticking" -- trolling artificial squid from a 30-foot fiberglass pole to lure the elusive species to the surface. Top-dollar bluefin can be worth as much as $20,000 each, but a short season and small government catch quota means explosive rivalries surface quickly.

Back to the beautiful state of Alaska for another reality-documentary series, this one set in the Arctic National Wildlife Refuge, a protected area home to thousands of native animals... and a handful of people. In 1980, the U.S. government banned human occupation in the refuge, and only residents in seven permitted cabins are allowed to remain. The series depicts the daily rituals of four families living in isolation and contending with bitter weather, frustrating setbacks, and aggressive wildlife in an unspoiled and unforgiving wilderness. The nonconformists include Heimo Korth, the "godfather of the final frontier," and wife Edna; Bob Harte, who has spent 40 years living by his own rules; and young couple Bob and Ashley Selden, who admit that they've survived by trial and error, learning day by day the harsh reality of frontier living.

Tanana, Alaska, is like the Pacific Northwest's version of Hotel California: You can check out any time you like, but you can never leave. Well, not exactly, but describing the town as remote is akin to saying the winters are chilly. Located at the junction of the Tanana and Yukon rivers deep in the state's interior, the town has no roads in or out, and for its 200-plus residents, survival in the winter is a daily challenge. "Yukon Men" unveils the people of Tanana, who struggle to find food, heat their homes, and ward off predators. But they stick together, a bond that helps them overcome the harsh conditions.