The Gareth Williams inquest provided a rare insight into the highly secretive world of Britain's national security agencies.
The picture of life working for Government intelligence painted at the hearing was a far cry from the glamorous and dangerous world of MI6's most famous fictional employee, James Bond.
It was bureaucracy and office politics rather than a succession of beautiful women, car chases and lucky escapes from certain death that made Mr Williams want to leave the Secret Intelligence Service (SIS), as MI6 is known.
According to his sister, the young Welsh codebreaker became disillusioned with the "office culture, post-work drinks, flash car competitions and the rat race".
More mundanely, his line manager at MI6 said he decided to quit because he was getting bogged down in the red tape of "process risk mitigation".
The inquest heard that Mr Williams visited bondage websites, and had women's wigs, make-up and £20,000 of designer women's clothing and shoes in his flat.
But his boss at MI6 - given the codename "SIS F" - indicated that what the maths prodigy got up to in his private life would not necessarily have stopped him carrying out his top-secret work.
She said: "There's no set template as to what (an employee's) lifestyle should be. Individuals have lifestyles and sexual choices which are perfectly legitimate."
SIS F blamed the week-long delay in alerting Scotland Yard to Mr Williams's disappearance, which hampered detectives' investigation into the death, on a "breakdown in communication".
Williams was found dead in a Government flat in Pimlico in August 2010.
After excelling at university at mathematics, Williams worked as a cipher and codes expert at the Government listening station, GCHQ.
Williams was then seconded to work at the Secret Intelligence Service headquarters in Vauxhall, London.
CCTV captures Williams entering Holland Road Tube Station on the 14th August 2010.
Caught on CCTV at Holland Road Tube Station the same day.
Seen the next day on CCTV in Hans Crescent, London
His body was found in a holdall in this Pimlico flat on the 24th of August 2010.
Williams' funeral was attended by Sir John Sawers, head of SIS.
Screengrab from a video reconstruction showing a yoga specialist trying to lock himself in a sports holdall unaided
Screengrab from a video reconstruction showing a person trying to close the zip and padlock themselves in a sports holdall unaided