Chopper Down: It is the dead of winter in Alaska and wildlife troopers Ernie Brent and Levi Duell race against time and freezing temperatures to rescue a missing pilot. (S4, ep 20) [S]
Too Much Pot: Winter has set in and, while patrolling Alaska's newly frozen lakes, wildlife trooper Jon Simeon discovers that someone has illegally killed two caribou. (S4, ep 19) [S]
New. Hot Drugs, Icy Streets: Trooper Mulvaney braves freezing conditions and slick ice roads as he attempts to halt a suspect who is fleeing the law in a high-speed car chase. (S4 ep 18) [S]
New. Blacked Out & Belligerent: When a family argument turns violent, trooper Matthew Determan must battle Alaska's backroads to break it up. (S4, ep 17) [S]
New. Trooper Stalker: Troopers respond to reports of break-ins, find a man passed out at the wheel of his car and uncover a stash of burnt money. (S4, ep 15) [S]
New. Crystal Meth Compound: The troopers launch a nail-biting sting operation to catch a notorious criminal who is suspected of stashing stolen guns. (S4, ep 14) [S]
New. Drunk And Dangerous: The state troopers spring into action when a huge storm and high winds leave thousands in central Alaska homeless and in danger. (S4, ep 13) [S]
New. Son And A Gun: State trooper David Loring rushes to the scene of a horrific car accident. Meanwhile, crystal meth runners put his colleagues to the test. (S4, ep 12) [S]
New. Meth Dealer Manhunt: The state troopers launch a huge manhunt for an infamous drug dealer who has a long history of of breaking the law. (S4, ep 11) [S]
New. Armed & Squatting: A rescue mission is launched when a toddler vanishes in the woods. Plus, the troopers confront a man who is living illegally on public land. (S4, ep 10) [S]
New. Hostage Standoff: Two lives hang in the balance when a man turns his gun on his pregnant girlfriend. Can Alaska State Trooper Jared Noll reach them in time? (S4, ep 9) [S]
Grizzly-Pendence Day: While a trooper deals with armed and hostile residents, suspects who were caught speeding abandon their car and flee into the woods on foot. (S4, ep 8) [S]
Campground Crazies: Things get off to a grisly start when a trooper finds possible human body parts. Plus, preparations begin for Alaska's Arctic Man event. (S4, ep 7) [S]
Armed and Bootlegging: A new trooper is put through the wringer when he tackles illegal alcohol manufacturing in a remote village. The hunt is on for a thief, too. (S4, ep 6) [S]
Shotgun Showdown: Troopers respond to reports of a dangerous gunman in Fairbanks, before trying to control rowdy fisherman in western Alaska. (S4, ep 5) [S]
Bloody Warrior: Leaving no stone unturned, a pair of troopers search for a man involved in a machete attack. The drama doesn't end, though, when they find the culprit... (S4, ep 4) [S]
Alaska Chainsaw Massacre: Alarm bells sound in this season four premiere when trooper Timothy Cronin receives a chilling phone call featuring the sound of a chainsaw... (S4, ep 1) [S]
Alaskan Standoff: Season three concludes in dramatic fashion when a team of troopers attempt to serve a warrant to a man who doesn't want to be found. (S3, ep 13) [S]
Helter Skelter Homicide: Troopers respond to both a potential homicide and an explosion at a gas station. An organised crime ring is investigated, too. (S3, ep 12) [S]
Warrant Wonderland: The stakes are raised when Cresswell and Acton are out-gunned by an armed man barricaded inside a home in a small Native Alaskan village. (S3, ep 11) [S]
Storm of the Century: A drunken driver wreaks havoc on the roads during a blizzard. The extreme weather prompts a few criminals to turn themselves in as well. (S3, ep 10) [S]
Midnight Poachers: Law-breaking hunters and drunken drivers keep the troopers busy, followed by a tour of the Alaska State Trooper Academy in Sitka. (S3, ep 9) [S]
Gun 'n' Hide: A surprise is in store for trooper Garcia when he uncovers a large stash of weapons stowed away in Alaska's Mat-Su Valley. (S3, ep 8) [S]
Moose/Man Hunt: Following a night operation to remove a threatening squatter, troopers reprimand a hunter for illegally killing a moose. (S3, ep 7) [S]
Cowboy Fugitive: Deep in the rugged Talkeetna Mountains, troopers John and Scott are on the lookout for illegal hunters of sheep, caribou and moose. (S3, ep 5) [S]
Spring Break Crazy: Attention turns to the Arctic Man Ski and Sno-Go Classic, a week-long extreme sports event and party held in the Hoodoo Mountains. (S3, ep 4) [S]
DUI on the 4th of July: Troopers keep an eye on partygoers on the Kenai Peninsula. A felony probation check is carried out in the remote village of White Mountain, too. (S3, ep 3) [S]
Grizzly Showdown: Cameras accompany troopers as they search for a lost woman on the ice, before moving on to Girdwood's big annual party. (S3, ep 2) [S]
Beers & Bears: Season three hits the ground running when the streets of Fairbank are turned into a race track courtesy of a getaway car and a freshly stolen firearm. (S3, ep 1) [S]
Series two concludes in action-packed fashion as the troopers hit the road in pursuit of a dangerous driver. An eventful trip to Copper River is also on the agenda. (S2, ep 13) [S]
There is no shortage of action when the troopers team up with the vice squad. And there's a meet-and-greet with a brave dog called Buddy. (S2, ep 11) [S]
Operation Moose Decoy: With the help of a life-size fake moose, troopers try to bust unsuspecting poachers. Plus, a motorcyclist crashes while escaping the law. (S2, ep 10) [S]
Highway Hijinks: Hit the road as the troopers patrol Alaska's Seward Highway, which stretches 127 miles on the picturesque Kenai Peninsula. (S2, ep 9) [S]
High-Speed Chase: Troopers hit the road in hot pursuit of a wanted felon, before trying to track down missing rafters on the Tonsina River. (S2, ep 7) [S]
Armed and Dangerous: Troopers attend the scene of a serious motorcycle accident, before checking in on the region's most isolated villages. (S2, ep 6) [S]
Justice Below Zero: Moving from the Mat-Su Valley to the Talkeetna Mountains, the troopers search for a stolen gun, before trying to find lost snowmobilers. (S2, ep 3) [S]
Arctic Force: The troopers race to save a woman on the brink of suicide, before transporting a sex offender, via snowmobile, to the mainland. (S2, ep 2) [S]
Spring Break Madness: Series two gets the party started with a trip to the annual Arctic Man festival, which hosts over 12,000 revellers. (S2, ep 1) [S]