Follow the troopers as they enter into the cold, dark and dangerous world of Alaska's criminals. In the Mat-Su Valley, Sgt. Manrique is forced into a father and son conflict in which the father nearly stabbed his son to death. Then in Wasilla, Trooper Cronin investigates a suspicious truck in a gas station parking lot and finds a familiar face — a felonious woman he's been searching for. Meanwhile up in Fairbanks, Trooper Haley gets word of an intoxicated man camping in the Alaskan woods.

On a dangerously cold winter night, the Troopers hunt for a man who is threatening to end his own mother's life. The Troopers let loose at the 53rd annual shooting competition against the Royal Canadian Mounted Police.

Wildlife Troopers Ernie Brent and Levi Duell race on snow machines against the time and the freezing temperatures to rescue a missing pilot.; Trooper Johnson is on a mission to catch a snow machine thief.

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From a hot pursuit on ice-covered roads to a moose disrupting busy streets, no patrol measures up to the bone-chilling magnitude as those of Alaska's state troopers. In Fairbanks, Trooper Rallo is in dangerous pursuit of a stolen vehicle. Down in Palmer, a call comes out to Trooper Taylor of a car accident involving a moose on the Glenn Highway, where thousands of drivers commute every day. In Homer, Trooper Chaffin searches for the suspect of a local burglary before he flees the state.

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Troopers Noll, Taylor and Hess arrive on the scene of a crime of sheer brutality. A scorned ex-husband has been viciously stabbed, leaving him nearly eviscerated and on the verge of losing his life. In the Mat-Su Valley, Trooper Determan is called to investigate a rolled-over vehicle. When he and the paramedics arrive, they find the car in a frozen swamp with an unconscious man trapped inside. Then in Juneau, Wildlife Trooper Bjork investigates nearly 100 unattended shrimp pots in the waters.

On the Parks Highway — the busiest stretch of road between Anchorage and Fairbanks — a head-on collision between an SUV and semi-truck shuts down the highway. Trooper Anderson arrives at the scene to find those in the SUV badly injured, and must work quickly with the emergency crew to save those whose lives are on the line. Across the valley, Trooper Noll responds to a burglary in progress and drives head-on into imminent danger, chasing after the suspect on ice-covered roads.

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Snowflakes fall as Trooper Howie Peterson responds to a snow-machine accident where the victim may be dead or alive. As night falls, he frantically sets out into the backwoods of avalanche country to find the man. Then, a horrific stabbing sends trooper Blake Calhoun on a search for the stabber in a maze of unsecured cabins, where the potentially armed man could be hiding behind any door. Later, Trooper Anthony Stariha tries to catch a speeding vehicle before reaching the populous town center.

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Winter has seized Alaska, and Trooper Timothy Cronin gets a chilling call sounding like a domestic violence situation involving a chainsaw. But to get to this rural area, Trooper Cronin has to navigate through record snowfall. Then, Trooper Howie Peterson is greeted by a man at a cabin with a 15-inch knife and a rifle. Finally, Trooper Anne Sears responds to a crime against a village public safety officer and has to fly in unpredictable weather. Time to bring the rifles.

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Trooper Cronin is patrolling Palmer's slippery streets when he gets a call about a suspected drunk driver going in the wrong direction. Across the valley, Trooper Taylor investigates the theft of a $15,000 ATV and goes on a 12-hour hunt that leads him into the Alaska woods in the dead of night. North in Fairbanks, Trooper Mike Munson responds to a call that a man who threatened his former landlord's life is stalking outside the landlord's home.

The troopers embark on a sting operation at the home of an infamous criminal who may be harboring stolen weapons.

A trooper must confront an erratic and hostile driver.

At the 2009 Arctic Man Ski and Sno-Go Classic--Alaskas version of Mardi Gras--troopers face a massive law enforcement challenge as roughly 10,000 people celebrate and snowmachine enthusiasts test their skills. The races and parties last for 4 days in the remote Hoodoo Mountains, and its up to just 13 Alaska State Troopers to keep the peace, enforce the laws, and perform dangerous search and rescue missions. Then in Fairbanks, troopers fight crime and undergo a nighttime training exercise while another trooper and his K-9 partner search a suspicious vehicle. And wildlife troopers have their hands full during the moose hunting season: theyre on the case when several illegally killed animals are discovered.

Unforgivable terrain mixed with big city crime makes challenging work for troopers in Soldotna, a city on the Kenai Peninsula. Trooper Brent Hatch responds to an ATV accident where an intoxicated youth lashes out. After a struggle, the youth ends up inside the walls of Wildwood Pretrial Facility. Then, a trooper investigates a collision between a motorcyclist and a semi truck, while another tracks down an 11-year-old runaway. Several troopers spend hours searching pitch black woods for a suspect who has previously assaulted an officer, and a wildlife trooper hits the waterways of the Kenai River. Alaska has the highest rate of missing persons reports in the country, and troopers are responsible for search and rescue missions. They must take to the skies to find two hunters stranded in the southeastern wilderness, an area with one of the highest concentrations of bear mauling in Alaska.

In the Alaskan outback, alcohol abuse is devastating communities and sending crime rates through the roof. Enforcing the law in this vast and nearly road-less region presents extreme challenges. The jail is located over a hundred miles from some of the native Alaskan villages where crimes are committed, and its the job of the State Troopers to haul suspects in. But in a world almost empty of roads, the job requires risky plane flights and boat trips for Troopers traveling alone with potentially dangerous offenders. Once in jail, untested inmates must defend themselves against tougher and more aggressive convicts, while guards strive to keep homemade alcohol out of the jail so that mayhem doesnt prevail.

Go inside one of the worlds most unique law enforcement agencies as the Alaska State Troopers fight crime, enforce fish and game regulations, and patrol the rugged terrain of Americas largest state. This episode takes viewers across Alaskas vast frontier as Troopers fight crime in Brevig Mission, survey the devastating flooding of the mighty Yukon River, go inside the walls of Anvil Mountain Correction Center in Nome, and take a few minutes to watch part of the famed Iditarod Dog Sled Race.

Go inside one of the worlds most unique law enforcement agencies as the Alaska State Troopers fight crime, enforce fish and game regulations, and conduct search and rescue operations in Americas last frontier. This episode takes viewers all over this enormous state as Troopers fight crime on the streets of Wasilla, conduct a search and rescue operation on the frozen Yukon River, enforce hunting regulations in the wilds near Fairbanks, and train for survival in Sitka.