1 | This week the inquiry into the death of Alexander Litvinenko alleged that President Putin had ordered the assassination of the former Russian spy, who was posioned with a cup of tea in a London hotel in 2006. Here for Guardian, Luke Harding has the full story of how the former detective helped Scotland Yard solve his own murder as he lay dying.
2 | Anyone else feel slightly uncomfortable about the bias in Making A Murderer? Here for the New Yorker Kathryn Schulz anaylses the hit documentary's shortcomings and how "it came to resemble the system it seeks to correct".
3 | The tennis world was rocked this week when a joint BuzzFeed / BBC investigation, headed by Heidi Blake and John Templon, exposed match-fixing evidence that the game's authorities have kept secret for years.
4 | In 'Who Poisoned Flint, Michigan?', Rolling Stone's Stephen Rodrick goes back to his home town to investigate a toxic disaster that left its resident's children exposed to lead - and the government shortcomings responsible.