Episode 5

In a TV first, Justin braves the turbulent North Sea as he goes inside an offshore wind turbine to see how engineers are fixing a fault that could cause these structures to topple into the drink. He also goes on the world's strangest fishing trip in a vast, flooded Louisiana sinkhole accidentally created by bungling salt miners, which has turned the local community into a ghost town. In Las Vegas, Paige Battcher learns how inept engineers lost more than a few quid on the roulette tables – they lost an entire hotel when they built it so badly it had to be demolished. Also, in Argentina, Miguel Soffia gets behind the wheel and finds out why engineers built a multi-million pound road to nowhere.