Crouch!Moody and the Goblet of Fire -- why so complicated?

[Eddie]

No: HPFGUIDX 157352

> > Eddie  queried:
> > Does Voldemort really care if anybody is suspicious or not?
> > I can't recall the canon now, but didn't Barty Crouch Jr.
> > light the dark mark at the Quidditch on Voldemort's orders?
> > That doesn't seem in line with trying to not raise suspicions
> > about his return.
> 
> akh responds:
> That scenario was in the movie, not the book.  To our knowledge,
> LV was no more aware than anyone else that Barty Crouch didn't
> die in Azkaban, but was polyjuiced and traded for his dying mother.

Eddie:
You are completely right.  Thanks for the correction.

But... although my example was wrong, I'm still not persuaded by
_canon_ that Voldemort particularly cares whether anybody knows he's
back or not.  Any canonical evidence?

Thanks again,
Eddie