Spies Like Us: Season 1 Episode 3 - what is an intelligence investigation like?

We all have our own image of what spies do and how they do it, ranging from Ian Fleming's iconic James Bond to, um, Johnny English and Bill Murray (star of The Man Who Knew Too Little). But what actually goes into an intelligence investigation? What are the moving parts? The guys delve into this. Oh and a story on how Hindu extremists in India are upset about a Hindu and Muslim lion 'cohabiting. You're gonna love this!