Jack Lawrence

However, the final case, the one that broke the camel's back, so to speak, the one that made them resign, was a failed assassination attempt.

So David decides this cannot go unchallenged.

And not only should they leave, but also he's going to leak what he knows to the press.

Leaving, however, was not a case of simply drop everything and run.

It would take around eight months before David and Annie would leave the country, and in that time they spent their lives watching everything they did and everything they said, especially in the confines of their own homes.

Eight months of back and forth and relationship building cemented, David and the journalist would break the story.

And it was time to leave.

The Metropolitan Police's special branch in the UK was a unit formed in 1883.

It was tasked with combating the rising threat of Irish Republican terrorism.

Over the years, this unit was tasked with many aspects of counter-terrorism and undercover infiltrations into organised crime groups as well as trade unions.

It would later become the executive arm of MI5 in dealing with espionage cases and, of course, tracking Annie and David.

Edward Snowden is now, of course, a household name, up there with the likes of Julian Assange when it comes to well-known whistleblowers.

He was born in June of 1983 in North Carolina to parents Lonnie and Elizabeth.

His family was in fact full of employees of the federal government and in fact his own grandfather was a senior official at the FBI for many years, including being at the Pentagon on September 11.

A computer whiz, Edward would attend a job fair in 2006 focused on intelligence agencies and would be offered a position with the CIA.

And so began his intelligence career.

In 2007, he was stationed in Geneva with diplomatic cover.

While there, he was widely considered the top technical cybersecurity expert, which saw him in fact hand-picked to support the president at the 2008 NATO summit in Romania.

Edward would resign from the CIA in February of 2009 and would begin working for the computer company Dell.

Dell manages computer systems for multiple government agencies, including the NSA.