Reporter Marcel Theroux is granted rare access to North Korea as the country contemplates reunification. As he explores the country with director Karim Shah and his official minder Mr Ri, the highlight of his trip is the first Mass Games to be held in five years, with 100,000 citizens singing their hearts out for the fatherland in celebration of the country's 70th anniversary. They also tour Pyongyang's stunning metro system, and visit a trade fair and a collective farm, and Theroux gets an officially sanctioned haircut, in a country where the wrong style can get you into trouble with the police. Travelling outside the city, his guides show off the country's first ski resort, and the team witness a changing country with an emerging soft capitalism.

Reporter Krishnan Guru-Murthy and director Jamie Welham travel to El Salvador to reveal what life is like for deportees from the US who are sent back to the gang-ravaged country under President Trump's crackdown on illegal immigration. President Trump says his government's latest crackdown is aimed at removing criminals and illegal immigrants, in particular members of the notorious Salvadoran-American street gang MS-13. However, official figures show that an increasing number of those who are being deported have no criminal record. There is a growing trend of Salvadorans with deep roots in the US - many of whom arrived in the States as children more than 20 years ago, and some of whom can't speak Spanish - being deported back to a country with which they have little relationship.