INFAST US

The first test is a Showdown first; a race in a 125 horsepower Formula Ford around Calder Park Raceway.

The rookies sweat it out in a grueling series of fitness challenges; Team Davison turns up the heat and wins 3 out of 3 challenges.

Greater Manchester Police crack one of Britain's largest illegal firearm trafficking networks, after a high-stakes operation fuelled by intelligence and digital forensics. Billy visits a Liverpool charity offering refuge and support to army.

Boyzone band member Shane Lynch hangs up his microphone and gets behind the wheel.

The team races to save a teen who drove a snowmobile off a cliff. A rookie is tested in a high-stakes rescue.

The team races to find two overdue snowmobilers in the remote backcountry in harsh, low-visibility conditions.

Chris and Dee Hathaway, a married couple deeply committed to rescue work in the Tetons, must help a skier who suffers a suspected spinal injury in the backcountry.

Several responders race to rescue an injured snowboarder; we also see how they juggle family dinners, day jobs, and sleepless nights.

The Beast from the East descends, covering parts of the UK in a blanket of snow and ice and bringing some of the country's busiest roads to a standstill; phones ringing off the hook at as scores of drivers are left stranded on Britain's roads.

A heavy loader carrying cardboard bales tips onto its side; the quaint rural roads of Staffordshire are seemingly no match for former army boy Jim; on a Midlands mission, snow threatens to leave rescuer Mark stranded.

When a fully loaded HGV rolls over on the A6, Fluff and his team need to create a second mess to solve the first; Jim is sent to recover a broken down truck from a waste tip facility.

Marcus Charman and colleague Trigger patch up an HGV's fuel tank during evening rush hour, Tez resorts to using a blowtorch to fix a car transporter's snapped spring, and a broken down driver gives out the wrong location.

Laramy and 7 leave camp Hell Hole and hit the trail again. They are headed for lower elevation in search of a more permanent place to call home.

Laramy and 7 find a long-term camping spot out of the snow and at a lower elevation. Laramy gets to work making a more permanent shelter and looking for food.

Laramy locates some whitetail deer and focuses his efforts on hunting them.

Stocked up on food, Laramy and 7 thrive at their new location.

Day one begins as the four two-man teams blast off from Hurricane Hole Marina in Key West with nine different cameras rolling on all the action including helicopter and underwater cameras.

Catch and release shark competition.

Teams do whatever it takes to avoid elimination.

Teams catch and release the biggest and dangerous sharks they to accrue points.

With three teams remaining, they find themselves weary after two days of battling sharks and each other.

With three teams remaining, they find themselves weary after two days of battling sharks and each other.

Day three ends at Hurricane Hole Marina in Key West, Florida.

Les Stroud shipwrecked on the desert island of Tiburon; after five days of surviving on the shore, he treks inland in search of food, water and shelter; in the desert landscape, Les must avoid packs of wild coyotes, scorpions and rattlesnakes.

Les strands himself in the Norwegian mountains to survive for ten days taking little food, and no water or gear.

Les is stranded in the Norwegian mountains; with no food or water, no safety or camera crew, Les must haul 65 pounds of camera gear down the slick wet mountainside in the hope of finding shelter.

Les is stranded in the jungles of Papua New Guinea.

Les gets separated from his friend and ATV, which is carrying all their supplies.

Laramy Miller is hitting the trail again with his trusty horse Seven and packhorse Jenson; Laramy preps and packs his gear, then says goodbye to his family and sets out on a challenging adventure.

Discovering the trail was impassable, Laramy backtracks to find a way around the deadfall to continue his journey, hunting, fishing and foraging his way deeper into the back country.

Laramy continues to have success foraging and fishing, but has yet to stalk any big game; with winter weather closing in, Laramy decides to build a shelter and settle into camp so he can stay dry in the rain and snow.

Laramy has some unexpected and unwelcome guests in camp, but the result is the first red meat he's had in weeks; he takes care of the hide and plans out his next move on The Trail.

Three teams of commercial fishermen fish the lakes and rivers of the Midwest.

Rick Johnson tries to change his luck and obtain a contract to fish Clam Lake.

Three teams of commercial fishermen fish the lakes and rivers of the Midwest.

Tim Adams pairs with his old friend, George, trying to turn a hot market into real money; Rick and Mike Johnson have fish penned up and a truck on the way.

Host Ott DeFoe hunts down double-digit largemouth bass in the dead of winter.

Host Ott DeFoe hunts down double-digit largemouth bass in a lake locked off in time in northern Florida.

Host Ott DeFoe hunts down double-digit largemouth bass in the shallow grass lakes of these southwest Florida watershed areas.

Host Ott DeFoe fights icy conditions and frozen rods as he hunts down double-digit largemouth bass in early January on Lake Chickamauga, Tennessee.

Host Ott DeFoe hunts down double-digit largemouth bass in untouched grassy waters.

A heavily dressed traveler from Lisbon and a fake passport holder spark a desperate scene at Leonardo da Vinci Airport.

Police probe an unemployed flyer's Paris trips, a luggage-free traveler from China, and a duty-free perfume thief.