On Monday morning, the Premier League announced a shock raft of charges into six-time champions Manchester City, concerning more than 100 breaches of its regulations spanning almost a decade.
An investigation of this size is unprecedented in the league's 30-year history - and could have serious ramifications for the club if the charges are all proven.
But what are City charged with, and why? It's taken more than three years to get to this point - so how long will the investigation last? And what do City, and their Premier League rivals, make of it all?
Ron Walker introduces Sky Sports News chief reporter Kaveh Solhekol, reporter Mark McAdam and football finance expert Kieran Maguire to explain the details of one of the biggest bombshell revelations in Premier League history.