Excitable commentators would have us believe that Tone will go in bright-eyed and enthusiastic, but be led out in handcuffs, a broken man.
We all know that there wasn't a legal case for the war. That there was no thought given to whether this was the right thing to do, or to what would happen if it was done.
We also know that this was really America's - well, Dubya's - idea, and we all know that Tony only joined in because his tongue was jammed so far up Bush's arse that he had no choice but to follow him wherever he went.
We also know that the press were more than happy to go along with the whole fucking charade. To faithfully reprint - on the front page, in huge letters - every single lie and distortion that Blair and Campbell cooked up.
We all know - even without this ridiculously expensive show trial - that we were misled, lied to and ignored, while politicians abused their power to do just whatever the fuck they wanted to.
So it would be great if Tony - and all the others - acknowledged that. Made some form of apology. Suggested some ways in which redress could be made.
But - much as we might fancy that idea - that's not gonna happen, is it?
No. Tony will squirm uncomfortably for a few hours. His every word, gesture and nervous blink will be relayed in real time to the waiting world. Then, at the end of it, he'll saunter out, past the cameras, onto an aeroplane, and resume his obscenely lucrative world tour.
This time next week, he'll be evangelising to some Christians, or some Capitalists, or a combination of the two, as if nothing had happened.
It would be lovely to see Blair whip out an onion, dab at his eyes, tearfully confess to having done wrong, and announce that he's prepared to take his punishment like a man, and that he'll do whatever it takes to make thing right.
But don't get your hopes up.