It’s fiction but for laugh-out-loud hilarity, get a hold of ‘The Amateurs’ by John Niven, which tells the story of a terrible, high-handicap golfer, who is transformed into a genius player, after being hit on the noggin by a stray drive.
Trust me - the above description doesn’t really do it justice, and you won’t regret it.
If you want something deeper, then try Luke Harding’s ‘A Very Expensive Poison’ which tells Alexander Litvinenko’s story up to the time of his assassination.