The way she's conducted these inquiries over the past week or so has been a masterclass - calling on Twitter for any whistleblowers to contact her, with confidentiality and protection assured, trailing partial stories, then leaving just enough time for Johnson et al. to cover themselves in egg through denials before publishing eyewitness accounts and photos and video.
Honourable mentions should also go to Paul Brand of ITV
Paul Brand
@PaulBrandITV
EXCLUSIVE: Video obtained by ITV News shows Downing Street staff joking about a Christmas party on 18th December last year.
No 10 has spent the past week denying any rules were broken. This new evidence calls that into question.
[Twitter video]
and the BBC's Ros Atkins
Ros Atkins
@BBCRosAtkins
THREAD 1/4: We've been taken aback by the response to our No.10 Christmas party videos. They've been watched over 11 million times in 9 days & I thought it'd be useful to put them in one place. We posted the first on 2 Dec, two days after the story broke.
[Twitter video]
It's noticeable that Atkins has led the BBC's coverage rather than Laura Kuenssberg, despite (or perhaps because of) her copious "insider" contacts.
The revelations might be relatively trivial if they hadn't stirred so many unhappy memories for so many who've tried to do the right thing during the pandemic, including forgoing being able to be by their loved ones' sides as they passed away. But finally - finally - most of the general public's patience seems to have been tested to breaking point by this shower of elitist, crooked liars. As ever, the cover-ups have made things worse than the original transgressions.
If only we had a more robust Opposition (Starmer has yet to call for Johnson's resignation, though he was quick enough to call for Sturgeon's before she was formally cleared of breaching the ministerial code earlier this year), the Tories' polling could be a lot worse.