DangerTV

In Hartlepool, the heli-medics are tasked with treating a man hit by a train; cyclist Trevor suffers serious injuries after a collision with a car; motocross biker Arai in Cumbria is flown across the country for emergency surgery.

A father and son set out on a cliffside sheep hunt, but one slip could mean life or death in the remote and unforgiving area.

Father and son bow hunters fight off a deadly grizzly bear attack.

The earthquake is deadly, highly destructive and impossible to predict.

Brave volunteers risk life and limb to rescue adventurers in the UK's perilous landscapes.

Chris suffers multiple injuries after a quad bike accident on a farm near Penrith; cyclist Vivienne is in a bad way after her bike leaves a notorious Cumbrian pass.

A pedestrian has been hit by a truck and is in a critical condition; a 75-year-old grandmother has fallen down after a suspected heart attack, leaving her in a critical condition.

The Westpac crew help a bushwalker in trouble; one false move will put everyone in danger; the crew also have to save a stabbing victim on their way to the hospital.

Westpac's helps a hiker in need.

Rio de Janeiro is famous for its sea-coasts and beaches loved by tourists from all over the world. Behind this postcard image, 20 percent of the population lives in shanty towns called favelas. In these zones drug dealers make their own rules.

Cynthia Kiecker and her husband are arrested and forced to confess to murders they did not commit.

The deadly no-go area is ruled by the Ugly Americans, one of the toughest street gangs in Cape Town; no police or ambulances will help one there.

The team responds to a heart attack victim, a car accident involving paving equipment and a detoxing street musician.

The team responds to a woman who overdosed, a bear mace victim, a cancer patient and a man who is having seizures.

Intelligence officers acquire the information collected by sources, from old-school "dead drops" to high-tech digital transfers.

Espionage experts reveal how spies obtain sensitive intelligence about foreign entities through clandestine collection, and also, how they use covert systems that are secure from enemy interception to communicate with their handlers.

The team responds to a woman who overdosed, a bear mace victim, a cancer patient and a man who is having seizures.