London (CNN)As political dramas go, this has the potential to be a box office hit: On Wednesday Boris Johnson's top aide-turned-nemesis, Dominic Cummings, is expected to reveal everything he knows about the UK government's far from flawless handling of Covid-19.
Boris Johnson's aide-turned-nemesis may be about to take his revenge. It won't be pretty
All eyes will be on the committee rooms of Palace of Westminster, as Cummings takes center stage, facing questions from MPs at a parliamentary inquiry into how Johnson and his team dealt with the coronavirus pandemic.
These hearings are usually bland, procedural affairs, but this one may become a key moment in Johnson's premiership.
Not long ago, Johnson and Cummings were thick as thieves. Johnson had Cummings to thank -- at least in part -- for his two greatest political triumphs: Brexit and his landslide election victory in 2019.
Cummings is one of the most controversial figures ever to have entered British politics, and his combative style became a defining feature of Johnson's government.
He famously hired a subordinate -- through his personal blog -- who had previously commented publicly in support of eugenics.
He demanded total control of the government's network of advisers, resulting in someone he held responsible for a leak to the press being escorted out of Downing Street by armed police.
His loathing of the British political establishment led numerous high-ranking Conservatives to warn Johnson against taking him into government -- not least because Cummings himself was not a Conservative and has openly expressed contempt for members of the party.
Johnson -- convinced as he was of Cummings' genius -- ignored that advice. Unfortunately for the Prime Minister, it didn't end well.
Following a bitter argument at the heart of Johnson's inner circle, Cummings resigned last November. Photographs of him departing Number 10 for the last time, carrying a cardboard box, led to wild speculation as to what might be inside.
On Tuesday, Cummings offered us a clue, posting in a since-deleted tweet that he was in possession of the only copy of a "crucial" document on the government's handling of Covid.
In other tweets posted at around the same time, Cummings extolled the value of hard lockdowns to help prevent deaths from the coronavirus.
The context here is important. Last month, numerous UK media outlets ran stories claiming Johnson had said he would rather "let the bodies pile high in their thousands" than impose another national lockdown in October 2020. The comments, which Johnson denies making, allegedly came after he had reluctantly agreed to a second lockdown -- the implication being that this would be the final one. Another lockdown was introduced in January 2021.