Season 21

Reporter Marcel Theroux and director Liam Nolan travel to Japan to meet some of the country's `Junior Idols' - schoolgirl performers whose audiences consist almost entirely of middle-aged men.

Karishma Vyas visits California to meet the "TradWives" - a growing movement of women in the United States who idolise Donald Trump, embrace traditional family values, reject feminism and are working hard to secure his reelection.

Sahar Zand reports on the adverse impact of locusts across Kenya and neighbouring countries, which are devouring crops and threatening millions with starvation. Filmed before the UK went into lockdown, she visits Kenya, on the trail of immense swarms of the insects - the biggest for 70 years. In a country in which agriculture provides a livelihood for more than 80 per cent of the population and where over a million people live on the edge of hunger, even a small swarm can eat the same amount of food in a day as 35,000 people, threatening millions with starvation and economic collapse.

Marcel Theroux visits Thailand and the controversial Dhammakaya movement. Critics say they're a money-obsessed cult while Dhammakaya claim they're a force for good.

Adnan Sarwar follows the trail of migrants dicing with death as they attempt to cross the frozen Alpine peaks marking the border between Italy and France. Braving altitudes of up to 2,500 metres and temperatures as low as minus 20, many have died in their attempt to seek safety, having been denied asylum in Italy or threatened with deportation back to the countries from which they fled.

Adnan Sarwar follows the trail of migrants dicing with death as they attempt to cross the frozen Alpine peaks marking the border between Italy and France. Braving altitudes of up to 2,500 metres and temperatures as low as minus 20, many have died in their attempt to seek safety, having been denied asylum in Italy or threatened with deportation back to the countries from which they fled.

Adnan Sarwar follows the trail of migrants dicing with death as they attempt to cross the frozen Alpine peaks marking the border between Italy and France. Braving altitudes of up to 2,500 metres and temperatures as low as minus 20, many have died in their attempt to seek safety, having been denied asylum in Italy or threatened with deportation back to the countries from which they fled.