Infiltrate Hunter HQ...
Get behind the scenes of a unique show in this new video extra Watch Series 2: Inside HQ
See how the Americans get on, while being chased by former FBI, CIA and US special agents. The hunt is on!
With a cash prize on the finish line, the stakes were even higher second time around. Find out how it works...
Risking their lives and dodging security to scale amazing structures
Fly over the fence into the UK's weirdest and creepiest off-limit areas
Plunge with the wingsuit jumpers and find out what makes them tick