Former President Jacob Zuma will come face-to-face with the Deputy Chief Justice at the state capture inquiry on Monday.
But Zuma insists there was no state capture.
Madonsela's 2016 report put the former president and his friends at the centre of a corruption network that looted public funds.
Zuma was unhappy that Mandonsela took away his powers to appoint a judge who would preside over the Commission of Inquiry, and gave them to the Chief Justice.
But it's anybody's guess whether his testimony -- if any -- will help uncover the truth.