Tank in a Vineyard: Suggs and Stephen continue their hunt for buried WWII treasure, and discover a tank buried in a vineyard. (S1, ep 3)
Douglas Bader and the Duxford Fliers: Suggs and WWII expert Stephen hunt for souvenirs left by flying ace Douglas Bader and the legendary Duxford Fliers. (S1, ep 2)
German Bomber in Liverpool: Suggs and WWII militaria expert Stephen Taylor unearth artefacts from former military sites - starting with a German bomber found in Liverpool. (S1, ep 1)
La Mesa, Mexico: A look behind the bars of La Mesa prison, in Mexico, where in 2008 two riots left 19 prisoners dead and 12 injured. (S2, ep 7)
Armavir Prison, Armenia: Hailed as Armenia's first European standard prison when opened in 2014, Armavir prison has since been accused of violating inmates' human rights. (S2, ep 6)
El Hongo, Tecate, Mexico: Go behind the bars of one of Mexico's toughest jails, El Hongo, reputedly controlled by a notorious drug cartel. (S2, ep 5)
South Cotabato Jail, Philippines: An inside look into the notoriously brutal South Cotabato Jail in the Philippines. (S2, ep 4)
Colony 100, Khariv, Ukraine: An unflinching look inside the world's toughest prisons, beginning with Colony 100 in Kharkiv, Ukraine. (S2, ep 3)
Carcel Distrital, Bogotá, Colombia (Part 2): Second part of the harrowing look behind the walls of the infamous Carcel Distrital prison in Colombia. (S2, ep 2)
Carcel Distrital, Bogotá, Colombia (Part 1): An unflinching look inside the world's toughest prisons. First part of a two-part insight into the Carcel Distrital, Colombia. (S2, ep 1)