Christopher Steele is the author of the infamous Trump/Russia dossier.
You remember - the one that contains allegations about sex workers urinating on a hotel bed.
But there's so much more to the dossier than that.
It outlines a massive conspiracy between Donald Trump and the Russian government - a list of allegations which, if proven, would constitute by-far the biggest attack on American democracy in history.
But is Christopher Steele a credible Russia expert? How likely is it that what's written in the dossier ever took place?
This is the sixth episode of Russia, If You're Listening.
Each week, host Matt Bevan brings the story of a character involved in the investigation.
You can get in touch at russia@abc.net.au.
