Glasgow is a city divided. Cut in half by one lethal weapon – the blade. There are more scarred faces in Glasgow than anywhere else in Britain and in 2002 the World Health Organisation designated Glasgow the murder capital of Europe. Gary Kemp examines a brutal razor attack in the 1920s, to find out why the Rangers and Celtic supporter’s rivalry runs far deeper than football. Martin investigates another victim who is cut down in the city in 2010 – this time butchered with a sword after an argument escalates out of control. Gary and Martin investigate two Glasgow gangs, one old and one new, using two savage blade attacks that typify the city’s street violence. They explore the cause and effect of the brutal divide that still splits Glasgow to this day